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3 years ago

Which of the following statements is FALSE about the circumference of a circle? PLEASE HELP

Mathematics

2 answers:

NeTakaya3 years ago

6 0

Answer:

what are the statements?

forsale [732]3 years ago

3 0

Answer: It's C=πr2

Step-by-step explanation: I took the test

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zubka84 [21]

Answer:

See Explanation Below

Step-by-step explanation:

Given

$(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx.cos x.$

Required

Prove

To start with; we open the bracket on the left hand side

$(sin x - cos x)^2 = (sin x - cos x)(sin x - cos x)$

$(sin x - cos x)^2 = (sin x )(sin x - cos x)- (cos x)(sin x - cos x)$

$(sin x - cos x)^2 = sin^2 x -sinx cos x - sin xcos x + cos^2 x$

$(sin x - cos x)^2 = sin^2 x -2sinx cos x + cos^2 x$

Reorder

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

From trigonometry;

$sin^2x + cos^2x = 1$

So;

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

becomes

$(sin x - cos x)^2 = 1 - 2sinx cos x$

Also from trigonometry;

$sec^2x - tan^2x = 1$

So,

$(sin x - cos x)^2 = 1 - 2sinx cos x$

becomes

$(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx cos x$

Proved

3 0

3 years ago

How can you make 64, multiplying just two numbers?

Darina [25.2K]

These are all the answers to this question!

1 x 64 = 64

2 x 32 = 64

4 x 16 = 64

8 x 8 = 64

16 x 4 = 64

32 x 2 = 64

64 x 1 = 64

7 0

3 years ago

Read 2 more answers

What slope is perpendicular to x + 4y = 12

myrzilka [38]

Solve for the equation. The. Divide by 4 on both sides. And whatever you get for the slope. Write the opposite which will give you the perpendicular slope. For example: 1/4x is perpendicular to -4x

6 0

3 years ago

What add up to get 1 but multiplies to get -42

Tems11 [23]

Answer:

7 and -6

Step-by-step explanation:

7 + (-6) = 1

7 * (-6) = -42

6 0

2 years ago

Find the value of x and y. This has to do with geometry

Ray Of Light [21]

Answer:

x = 30°

y = 30°

Step-by-step explanation:

By inscribed angle theorem:

$x = y = \frac{1}{2} \times 60 \degree \\ \\ x = y = 30 \degree$

4 0

2 years ago