1.

\begin{array}{l}{\text { (1) If } \sin \theta=\frac{20}{29}, \text { then } \cos \theta=?} \\ {\text { (A) } \frac{21}{20} \quad(B) \frac{20}{21} \text { (C) } \frac{29}{21} \text { (D) } \frac{21}{29}}\end{array}

Answer»

option (d) is correct.



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