Mathematics Middle School

basic trigonometric values.

Answers

Answer 1

first one is 0.997652127587
second one is 0.0684852708385

Answer 2

Answer:

both = - [tex]\frac{\sqrt{2} }{2}[/tex]

Step-by-step explanation:

[tex]\frac{5\pi }{4}[/tex] is an angle in the 3rd quadrant where both sin and cos < 0

The related acute angle is [tex]\frac{\pi }{4}[/tex] , then

cos ([tex]\frac{5\pi }{4}[/tex] ) = - cos ([tex]\frac{\pi }{4}[/tex] ) = - [tex]\frac{1}{\sqrt{2} }[/tex] = - [tex]\frac{\sqrt{2} }{2}[/tex]

sin ( [tex]\frac{5\pi }{4}[/tex] ) = - sin ([tex]\frac{\pi }{4}[/tex] ) = - [tex]\frac{1}{\sqrt{2} }[/tex] = [tex]\frac{\sqrt{2} }{2}[/tex]

Related Questions

A journalism teacher wants to determine
whether his students would prefer to attend a
national writing convention or tour of a local
newspaper press. The journalism teacher has
a total of 120 students in 4 different classes.
What would be a representative sample in this
situation?

Pls help!!!!!

Answers

Answer:

i dont know

Step-by-step explanation:

i dont know

Every class would have 30 students in the class

HELP ASAP!!!!

Express your answer as mixed number.

The smallest hummingbird is the Bee hummingbird. It has a mass of 1/4 grams. The mass of a larger type of humming bird is about a 5 times the mass of the mass of the Bee hummingbird.
What is the mass of the humming bird?

The mass of the larger hummingbird is ___ grams.

Answers

7 grams there you go

Answer:

7 1/2 grams

Step-by-step explanation:

The mass of Bee hummingbird is given in the question as = 1 1/2 grams

Mass of the larger humming bird = 5 times the mass of Bee hummingbird

The mass of the larger hummingbird is calculated as:

5 × 1 1/2 grams = 5 × 3/2 grams

= 15/2 grams = 7 1/2 grams

Therefore, the mass of the larger hummingbird is 7 1/2 grams

PLEASE I NEED ACTUALLY HELP I ONLY HAVE 6 MINUTES TO DO THIS AND I HAVE NO IDEA HOW TO DO IT :(
What is perimeter for the semi-circle/rectangle image and area for the other one

Answers

I don’t know the answer but first you need to find the perimeter for each shape that is divided by the lines. I also provide a picture above with formulas to figure out the perimeter

Answer:

A= 551.625

Explanation:

Ignore the semi-circles.
Take the high and width of the remaining rectangle(15 and 25)
Multiply them together =375
Rectangle =375

Take the semi-circles and make them a circle. The diameter is the same as the height, so 15
15/2 =7.5, the radius

Square the radius(=56.25) and multiply it by pi to get 176.625

Add the area of the circle and the rectangle to get the answer.

How many millimeters are equal to one kilometer?

Metric
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 meter = 1000 millimeters
1 centimeter = 10 millimeters

Answers

Answer: The answer would be 1,000,000, or one million.

Step-by-step explanation:

There are 1000 millimeters in a meter, and there is the same number of meters in one kilometer. So to solve for how many millimeters are in one kilometer, just multiply 1000 by 1000 to get 1,000,000. Hope this helps!

It will equal 1,000,000 kilometres

I need to get aleks done on june 3oth

Answers

Umm sure lol best of luck.

Answer:

The 23.7 oz is a better deal

Step-by-step explanation:

for the 10.1 oz it is $0.25 per ounce

for the 23.7 it is $0.23 per ounce

BRAINLIEST!!!!! Name a pair of complementary angles.
a protractor, with segment DEF along the bottom, EH point to the 75 degree on the left, EJ to 90 degrees, EK to the 20 degrees on the right
angles DEJ & FEJ
angles DEH & DEJ
angles HEJ & JEF
angles DEH & HEJ

Answers

Answer:

1st Pair :- Angle DEH and Angle HEJ.

2nd Pair :- Angle KEF and Angle KEJ

Hope this helps

Good Day!

A pair of complementary angles as shown in the protractor is angles DEH & HEJ; option D.

What are complementary angles?

Complementary angles are two angles whose sum is equal to 90°.

The angles that are complementary as shown in the protractor are DEH and HEJ.

DEH = 75

HEJ = 15

DEH + HEJ = 90°.

Therefore, a pair of complementary angles as shown in the protractor is angles DEH & HEJ.

Learn more about complementary angles at: https://brainly.com/question/16281260

#SPJ9

Need help with math quarterly please

Answers

Answer:

should be D

Step-by-step explanation:

man I'm in geometry I just know this stuff

What is the distance between the following points?

Answers

Answer:

Step-by-step explanation:

it's c, the square root of 36

Pls somebody help me

Answers

Answer:

15^2 + 36^2 = c^2

225+1296 = c^2

sqrt(1521) = sqrt(c)

c = 39

1st Blank - 15

2nd Blank - 2

3rd Blank - 225

4th Blank - 1296

5th Blank - 1521

6th Blank - c

7th Blank - 39

Step-by-step explanation:

Using the pythagorean theorem we know a^2+b^2=c^2 so by filling out a and b into the blanks we then know the sum of a and b squared is equal to c squared then to cancel out the exponent we use the radical then find c is equal to 39.

Answer:

1. 15^2 + 36^2=c^2

2. 225 + 1296=c^2

3. sqrt (15^2 36^2)=sqrt (c^2)

i neeed helppppp plssssssssssssssss

Answers

Well since there are 8 total possible outcomes you would take 8 and divide it by the total of green parts which would be 2 so you would do 8 divided by 2 which would give you 4 so your answer would be 4

Hope this helps

Answer

2/8

I’m not positive

Help me i-Ready math. No links and no guesses

Answers

Answer:

box number 4 the last box

Step-by-step explanation:

because 5 x 5 = 25 and 25 x 5 = 125

Answer:4
Hope this helped

A bullet of mass m1 = 0.020 kg is fired with initial speed v1 into a block of mass m2 = 0.500 kg that is initially at rest. The bullet becomes embedded in the block and the pair slide along to the right a distance d= 0.35 m over a rough surface with uk = 0.25. the spring (with k = 450 N/m) is compressed by a distance of x = 0.075 m. work backwards and determine the initial velocity of the bullet.

Answers

Bro this goes in physics

I need to get aleks done on june 3oth

Answers

Answer:

I think you divide. So 2.53 divided by 5.48 or the other way around or something. I don't know for sure. Sorry. I think the 23.7 ounce is better though.

Step-by-step explanation:

Hope this helps!!!!!!!!!!!!!! :) :) :) :) :)

SORRY IF IT'S WRONG!!! :) :) :) :) :)

Help me with my aleks its due June 30th

Answers

Answer:

5 divided by 2 = 2.5 2.5 is the answer because you split the bigger number in half and in order to do that you need to divide by 2.

Step-by-step explanation:

Hope this helps you!!!!!!!!!! :) :) :) :) :)

SORRY IF IT'S WRONG!!!!! :) :) :) :) :)

The ratio of dye to pounds of clothing is constant. A worker develops the chart below to show the amount of dye needed for different amounts of clothing.

For which weight of clothing is the ratio of weight to dye different from the other ratios?
21 pounds
42 pounds
84 pounds
105 pounds

Answers

Answer:

Step-by-step explanation:

The answer is B, 42

The answer will be 42 pounds

Please help with this

Answers

Step-by-step explanation:

All has been answered... send me any questions at comments

27,30,23,92,20,22 and yea that’s the answe

Evaluate : 1/2 ( 4x - 12) when x = 9

Answers

Answer: 12
Explanation:
Replace the X with nine then solve it in your parentheses first then multiply your parentheses by 1/2

Answer:

Step-by-step explanation:

plug in 9 for x in the equation

1/2 (4(9)-12)

6. −7(x−6)=−70

7. Solve for n *(4 Points) 9+n=−2

Answers

Answer:

6. x = 16

7. n = -11

Step-by-step explanation:

6. -7(x-6)=-70

= -7x + 42 = - 70

= - 7x = - 70 - 42

= -7x = -112

= -7x/-7 = -112-/7

= x = 16.

7. 9 + n= - 2

= n= -2 - 9

= n = -11

How many pints are in6 1/2quarts?

A: 3 1/4pt
B: 13 pt
C:19 1/2pt
D: 26 pt

Answers

Answer:

B. 13 pt

Step-by-step explanation:

There are 2 pints in 1 quart

2×6 1/2=13

Hope this helps! :)

It is 13. The first person was corret

HELP PLEASE WHATS THE RIGHT ANSWER (I GOT 67)

Answers

Answer:

Step-by-step explanation:

66%

Answer : the right answer is 66%

Part of the population of 4,750 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 5 of them are infected. How many elk are likely to be infected? Based on the sample, there will likely be infected elk in the wildlife preserve

Answers

Answer:

ANSWER IS 475

Step-by-step explanation:

because using the rule of three aka 4750 x 5 = 23750 divided by 50 = 475

answer in the image, PLs answer

Answers

The answer for the first question would be 3

a. 3

b. Vertical angles

c. 124 degrees

d. Supplementary (angles that add up to 180 degrees aka a straight line)

yesssssirrrrrrrrrrrrrrrrrrrrrrrrr

Answers

minimum: 27
lower : 30.5
median: 38.5
upper: 44
maximum 52

Decide whether the table could represent a proportional relationship. If the relationship could be proportional, what would be the constant of proportionality?

Answers

Answer:

a) non-proportional/ constant rate: 3

b) non-proportional/ constant rate 3

Step-by-step explanation:

Joe has 1/2 of a bag of peanuts. He wants to share them equally among himself and 3 friends. How much of the bag of peanuts would each person get?
A. 6
B. 1/6
C. 3/2
D. 1 1/2

Thank you!!!!!

Answers

Hi there! So joe had 1/2 of a bag of peanuts and he wants to share them equally, it would be 1/6! Answer B

The answer is B because you need to do

You currently have a job as a salesperson at American Eagle. You receive a salary of $75 per week plus a commission of 15% on all sales over $1500. Find your earnings this week in which your sales totaled is $2000. This will be the amount you have to spend.

Answers

Answer:

Step-by-step explanation:

75$ for the week

2000*0.15=300

so 300 and 75 are the numbers but I don't know what commission is, so you add or subract the numbers, do what you have to do.

All right it’s easy so all you wanna do is just deplete the 75 know that the 15% is still untangenable and clear the 2000 with the rest and you got your self a first degree in finchnizing good luck

The perimeter of a square is represented by 20n-8. Write an expression that will represent each side of the square.

Answers

Answer:

n=3

Step-by-step explanation:

20+20+20 length +width+ height

20×3

(20n-8) / 4
5n-2 is the answer

x/4-3=2

it si a fraction of x/4 minus 3 equals 2 HELP!

Answers

The answer to your question is =20

it would equal 20 (I think

(8x+1/2)+(4x-5 1/2) please help me

Answers

Answer: 6x-25 will be your answer

Step-by-step explanation:

The answer is 6x-25

Please help it’s really hard for me

Answers

Answer: Question #1 is Unit Fraction. Question #2 is Fraction. And Question #3 is Equal To.

Step-by-step explanation: Hope this helps! Have a fantastic day!

Number 1 is unit friction, number 2 is friction and number 3 is equal to

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