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Questions  >>  CBSE XI  >>  Math  >>  Trigonometric Functions
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Find $\sin \large\frac{x}{2},$$\cos \large\frac{x}{2}$ and $\tan \large\frac{x}{2}$ when $\cos x=-\large\frac{1}{3}$.$x$ in quadrant III

$\begin{array}{1 1} \sin \frac{x}{2} =\frac{-\sqrt 6}{3} ; \cos \frac{x}{2} =\frac{- \sqrt 3}{3}; \tan \frac{x}{2} =\sqrt 2 \\ \sin \frac{x}{2} =\frac{\sqrt 6}{3} ; \cos \frac{x}{2} =\frac{\sqrt 3}{3}; \tan \frac{x}{2} =\sqrt 2 \\ \sin \frac{x}{2} =\frac{\sqrt 6}{3} ; \cos \frac{x}{2} =\frac{- \sqrt 3}{3}; \tan \frac{x}{2} = - \sqrt 2 \\ \sin \frac{x}{2} =\frac{- \sqrt 6}{3} ; \cos \frac{x}{2} =\frac{ \sqrt 3}{3}; \tan \frac{x}{2} = - \sqrt 2 \end{array}$

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