Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
Easy$\frac{1}{1+\sin \theta}+\frac{1}{1-\sin \theta} = $
- A$2 \cos ^2 \theta$
- B$-2 \cos ^2 \theta$
- C$2 \tan ^2 \theta$
- D$2 \sec ^2 \theta$
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सिद्ध कीजिए कि:
$2 \sin ^{2} \frac{\pi}{6}+\csc ^{2} \frac{7 \pi}{6} \cos ^{2} \frac{\pi}{3}=\frac{3}{2}$
$2 \sin ^{2} \frac{\pi}{6}+\csc ^{2} \frac{7 \pi}{6} \cos ^{2} \frac{\pi}{3}=\frac{3}{2}$
Medium
View Solutionयदि $\sec x + \tan x = 3, x \in (0, \frac{\pi}{2})$ है,तो $\sin x =$
$\tan 67 \frac{1}{2}^{\circ} + \cot 67 \frac{1}{2}^{\circ}$ का मान है
MediumKCET 2008
View Solutionयदि $\cosh x = \frac{\sqrt{14}}{3}$,$\sinh x = \cos \theta$ और $-\pi < \theta < -\frac{\pi}{2}$ है,तो $\sin \theta =$
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