Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesTrigonometrical ratios of multiple and sub-multiple angles
EasyIf $\tan \theta = \frac{1}{3}$,then $\cos 2 \theta = $
- A$\frac{1}{4}$
- B$\frac{1}{10}$
- C$\frac{1}{5}$
- D$\frac{4}{5}$
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If $\frac{5\pi}{2} < x < 3\pi$,then the value of the expression $\frac{\sqrt{1 - \sin x} + \sqrt{1 + \sin x}}{\sqrt{1 - \sin x} - \sqrt{1 + \sin x}}$ is
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View Solution$\frac{\cos A}{1 - \sin A} = $
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View Solution$\tan 20^\circ \tan 40^\circ \tan 60^\circ \tan 80^\circ = $
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