Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
EasyIf $x = \sec \theta + \tan \theta ,$ then $x + \frac{1}{x} = $
- A$1$
- B$2 \sec \theta$
- C$2$
- D$2 \tan \theta$
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The value of $\tan 1^\circ \tan 2^\circ \tan 3^\circ \dots \tan 89^\circ$ is equal to
$\sin \frac{\pi}{5} + \sin \frac{2\pi}{5} + \sin \frac{3\pi}{5} + \sin \frac{4\pi}{5} =$
$\cos \theta(\operatorname{cosec} \theta - \sec \theta) - \cot \theta =$
$\tan \theta \sin \left( \frac{\pi }{2} + \theta \right) \cos \left( \frac{\pi }{2} - \theta \right) = $
Easy
View SolutionWhich of the following is true?
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