3 questions

Question

 

Which of the following is equivalent to the expression? 

	A.
	B.
	C.
	D.

 

 

Which of the following is equivalent to the expression? 

	A.
	B.
	C.
	D.

Which of the following is equivalent to the expression? 

	A.
	B.
	C.
	D.

 

Answer 1

1)

Recall the formulae

Option C is correct.

Answer 2

2)

Option C is correct.

Answer 3

3)

Apply the pythagorean identity

Option A is correct.