Question

Which of the following statements is true?

a sin 18° = cos 72
b. sin 55º = cos 55°
C. sin 72° = cos 18°
d. Both a and
Please select the best answer from the choices provided
Mark this and return
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Answer 1

D. Both A and C

Step-by-step explanation:

I'm guessing D. states 'Both A and C', since it works.

Process:

A. sin 18° = 0.31, and cos 72° = 0.31

A. works!

B. sin 55° = 0.82, and cos 55° = 0.57

B. does not work!

C. sin 72° = 0.95, and cos 18° = 0.95

C. works!

Hope this helps!