.prove that cos (90-A).sinA + sin(90 - A).cosA = 1 ​

Answers

Answer 1

Answer:

See Explanation

Step-by-step explanation:

[tex]cos (90-A).sinA + sin(90 - A).cosA = 1 \\ \\ LHS = cos (90-A).sinA + sin(90 - A).cosA \\ \\ = sinA.sinA + cosA.cosA\\ \\ = sin ^{2} A + cos^{2} A \\ \\ = 1 \\ \\=RHS\\\\ reason \\ cos (90- \theta) = sin \theta \\ sin (90- \theta) = cos \theta \\ sin ^{2} \theta + cos^{2} \theta = 1 \\ \\ thus \: proved \\ [/tex]


Related Questions

find the value of x
do 5 and 7

Answers

Answer:

#5 = 14.4

#6 = 8.4

Step-by-step explanation:

p(x)=(2x^2-9x+7)(x-2)

Answers

Answer

Answer:

p(x)=(2x²-9x+7)(x-2)

=(2x²-2x-7x+7)(x-2)

=[2x(x-1)-7(x-1)](x-2)

=(x-1)(2x-7)(x-2)

Find the solution set for 8x - 3 = 2(x - 1/2)​

Answers

Answer:

x = 1/3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

8x - 3 = 2(x - 1/2)

Step 2: Solve for x

Distributive 2:                              8x - 3 = 2x - 1Subtract 2x on both sides:         6x - 3 = -1Add 3 to both sides:                   6x = 2Divide 6 on both sides:              x = 1/3

Joy wants to build a rectangular garden he plans to use a side of a river from one side of the garden so he will not place fencing along the side of the garden he has 92 yards of fencing material what is the maximum area that he will be able to enclosed

Answers

Answer:

I think the greatest area is 1050 yards.

which equation is equivalent to x2+7x+12/ x2-x-12

Answers

Answer:here try both of these

x=4

x=3

Step-by-step explanation:

Priya has a recipe for banana bread. She uses 7/1/2 cups of flour to make 3 loaves of banana bread. Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour. Which of these equations represents the relationship between b and f?

Answers

Answer:

5b=2f

Step-by-step explanation:

Priya uses [tex]7\dfrac{1}{2}[/tex] cups of floor to make 3 loaves of banana bread.

Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour.

To find the relation between b and f, the steps are as follows :

[tex]\dfrac{\text{cups of flour}}{\text{loaves of banana bread}}=\dfrac{7 \dfrac{1}{2}}{3}\\\\=\dfrac{\dfrac{15}{2}}{3}\\\\=\dfrac{15}{2}\times \dfrac{1}{3}\\\\=\dfrac{5}{2}[/tex]

It means,

[tex]\dfrac{f}{b}=\dfrac{5}{2}\\\\5b=2f[/tex]

So, the relationship between b and f is "5b=2f".

Answer:

5b = 12f

Step-by-step explanation:

WHOEVER ANSWERS IT WILL GET BRAINST DUE IN 5 MINUTES!!!!!

Answers

Answer:

Its b

Step-by-step explanation:

C because it x is an exponent making it an exponential function

the legnth of a rectangle is 4 times the width. the primiter is 120 cm. find the width and the length of the rectangle.​

Answers

perimeter rectangle = 120 cm

let width be = x
thus the length will be = 4x

4x + 4x + x + x = 120
10x = 120

thus, x = 12 cm

so , width = x = 12 cm

length = 4x = 4(12) = 48 cm

i am sorry if my answer is wrong .

A peqch pie is made with 13 peaches, which are evenly distributed throughout the pie. If Joe ate one slice that contained exactly 5 peaches, what was the angle measure of the slice to the nearest tenth of a degree?

Answers

Answer:

138.5°

Step-by-step explanation:

Since the peach pie is a circle, we have a total angle of 360°.

We need to determine what fraction of the total pie of 13 peaches is the 5 peaches contained in Joe's slice.

This is number of peaches in Joe's slice/total number of peaches in pie = 5/13. To find the angle Joe's slice measures, we multiply 5/13 by 360°.

So, 5/13 × 360°

= 0.3846 × 360°

= 138.46°

≅ 138.5° to the nearest tenth of a degree

Pls help it’s not that hard

Answers

Answer:

what is the question

Step-by-step explanation:

???????1huhuh

help for 10 years good luck

Answers

Answer:

The answer is 8

Step-by-step explanation:

I need the good luck :)

Pls answer this is urgent

Answers

Answer:

9 hours

Step-by-step explanation:

12 times 9 equals 108

108 - 9 equals 99

what's the definition of electrolysis​

Answers

Answer: chemical decomposition produced by passing an electric current through a liquid or solution containing ions. In chemistry and manufacturing, electrolysis is a technique that uses direct electric current to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell. Electrolysis is used in industry for the production of many metals and non-metals (e.g., aluminium, magnesium, chlorine, and fluorine). Electrolysis is commonly employed for coating one metal with another. The method of coating one metal with another using an electric current is called electroplating.

Hope this helps....... Stay safe and have a Merry Christmas!!!! :D

15 points please help me ???? ASAP

Answers

I think it is +0.67
I don’t know tho sorry
Have a nice day tho

A line passes through (2, 5) and (8, 10). Find the value of y if (12, y) lies on the line. correct answer gets brainliest

Answers

Answer:

[tex]y = 6[/tex]

[tex]hope \: it \: helps... \\ mark \: as \: brainliest.....[/tex]

Twelve waters cost $9. How many can you buy with $3?

Answers

Answer:

4 bottles of Water

Step-by-step explanation:

First, we need to find how much each water costs. So, I created this equation below.

9/12=?

The answer to the equation is .75, or 75 cents.

So, we can now make yet another equation to find the amount to buy with 3 dollars.

3/.75=?

The answer to that equation is 4.

Thus, the answer is 4 bottles of water.

Which answer choice shows the numbers in order from least to greatest?


A. 4.1, 4, 0, -0.5, -6/2, -10

B.-10, -6/2, -0.5, 0, 4, 4.1

C. -0.5, -6/2, -10, 0, 4, 4.1

D. -10, -0.5, -6/2, 0, 4.1, 4

Answers

B, this is because -6/2 = -3

!00 points and Brainliest plzzzz help, I will report false answers though

Answers

Answer:

4x+y=17 that the answer  

Step-by-step explanation:

Answer:

-4x-17=y

Step-by-step explanation:

Distribute the -4 into the parenthises. Then subrtract the 1 from both sides.

Can someone help me please!!

Answers

I AM HERE TO HELP--- nope I'm sorry

Please help me with a math question ASAP!!! Will give Brainliest

Below is a screenshot of the problem

Answers

Answer: 128

Step-by-step explanation: 3 x -2 + 70 = 64 + -2 + 70 = 128

Hey y’all can you please please add me 557rg and I will give you brainlest phone number please please add

A recipe for chicken noodle soup calls for 1 3/4 cups of chicken broth. Peggy wants to triple the recipe. How many cups of chicken broth will she need?

Answers

Step-by-step explanation:

multiply 1 3/4 by 3

7/4×3

21/3=

5 1/4

Answer:

1. Less than 3

2. 9/4

Step-by-step explanation:

Which function is best represented by the graph?

Answers

The slope is negative since the line is going downwards. Y intercept: when x = 0 and looking on the graph it’s (0,-2)

Solution: B. y = -2x - 2

What equation is a proportion?

A. 1/3 = 1/4
B. 3/4 = 6/9
C. 5/8= 20/32
D 7/9 = 21/28

Answers

Answer:

c. 5/8= 20/32

Step-by-step explanation:

because 5*4=20 and 8*4=32

EL HFG es un triangulo isosceles. El angulo H
es el angulo del vertice
EL HG eš=3X -5, FG =×-1 y HF=×+7 Encuentra el valor de x y las medidas de HG,FG, y HF

HE
y​

Answers

Answers:you wrote it wrong so I can’t understand

Help me please i dont know

Answers

Answer:  Median = 6

==========================================================

Explanation:

Sort the values from smallest to largest: {2, 5, 6, 10, 10}

Now cross off the first and last values to get this smaller set: {5, 6, 10}

Repeat the process one more time and we get this: {6}

This shows 6 is the middle most item of the original sorted set above. Therefore, 6 is the median.

Solve the equation 14=-(x-8)

Answers

Answer:

x = -6

Step-by-step explanation:

Answer:

x=-6

Step-by-step explanation:

14=-(x-8)

14=−x+8(Distribute)

flip equation:

−x+8=14

Subtract 8 from both sides

−x+8−8=14−8

−x=6

divide by -1 both sides

x=-6

Can someone help me with this

Answers

>2 is also 40° since that is the rule of corresponding angles

Answer: <2 is 40 degrees still.

Step-by-step explanation:

Both Angle 1 and Angle 2 are corresponding angles (aka Same Side Angles)

Which is the solution for ln(3x - 5) = ln(11) + ln(2) ?

Answers

Answer:

B: x=9

Step-by-step explanation:

You have to use the property of logarithms

that says ln A + ln B = ln AB.  So here we have

ln (3x - 5) = ln 11 + ln 2 = ln 22

Therefore 3x - 5 = 22, from which x = 9

Find the coordinates of quadrilateral "WXY' after a dilation with the scale factor of 2.
Original coordinates:
V(6, 2), W2,4), X-3, -2), Y(3, -5), scale factor of 2
8
W
0 -86
10
12
NEED HELP ASAP

Answers

Answer:

2,1

Step-by-step explanation:

Answer: no  

Step-by-step explanation:

please help im crying and failin math i have a 41 f

Answers

Answer: d

Step-by-step explanation: trust me

Answer:

C) The depth the scuba diver is before he/she begins the ascent to the surface.

Step-by-step explanation:

This would be your answer because it is asking what the y-intercept of the graph represents. On the graph the y-intercept is labeled Depth(m), which represents the meters the diver assented to reach the surface from where they were originally at.

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