Ts Eamcet
Trigonometric Ratios And Identities
TS EAMCET 2020 (Online) 14th September Evening Shift
MCQ+1 / -02020
If $\cot \left(\frac{A}{2}\right)=\sqrt{\frac{1+a}{1-a}} \cdot \cot \left(\frac{\theta}{2}\right)$, then $\cos \theta=$
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