Question 30 Answer and Explanation _ACT December 2017 Form A10 Math Section

Question 30 Answer and Explanation _ACT December 2017 Form A10 Math Section

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30. If ${90}^{\circ}<\theta<{180}^{\circ}$ and $\sin{\theta}=\frac{20}{29}$ , then $\cos{\theta}$ ?

F. $\frac{29}{20}$

G. $\frac{20}{21}$

H. $-\frac{21}{29}$

J. $-\frac{29}{21}$

K. $-\frac{29}{20}$

Answer and Explanation

Your Answer is

Correct Answer is H

Explanation