Question 51 Answer and Explanation _ACT December 2011 Form 70A Math Section

Question 51 Answer and Explanation _ACT December 2011 Form 70A Math Section

ACT Test Explanations Profile Exam History

Logout

51. Whenever sin θ = 1, the value of cos θ is:

A. -1

B. $-\frac{1}{2}$

C. 0

D. $\frac{1}{2}$

E. 1

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Choose C because sin² α+cos² α=1.