Read the proof. What is step 2?

1. sin(2x) = cos(x)cos(x) – sin(x)sin(x)

2. sin(2x) = sin(x)cos(x) – sin(x)cos(x)

3. sin(2x) = cos(x)cos(x) + sin(x)sin(x)

4. sin(2x) = sin(x)cos(x) + sin(x)cos(x)

1. sin(2x) = sin(x + x)

2. ?

3. sin(2x) = 2sin(x)cos(x)

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.