Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesTrigonometrical ratios of multiple and sub-multiple angles
EasyIf $\cos 3\theta = \alpha \cos \theta + \beta \cos^3 \theta$,then $(\alpha, \beta) = $
- A$(3, 4)$
- B$(4, 3)$
- C$(-3, 4)$
- D$(3, -4)$
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Similar Questions
If $\cos \theta = \frac{-3}{5}$ and $\theta$ does not lie in the second quadrant,then $\tan \frac{\theta}{2} = $
If $\cos A = \frac{3}{4}$,then $32\sin \left( \frac{A}{2} \right)\sin \left( \frac{5A}{2} \right) = $
Medium
View Solution$\tan 3A - \tan 2A - \tan A = $
Easy
View SolutionIf $3 \sin 2 \theta = 2 \sin 3 \theta$ and $0 < \theta < \pi$,then the value of $\sin \theta$ is equal to
$\frac{1-\cos 2 \theta+\sin 2 \theta}{1+\cos 2 \theta+\sin 2 \theta}=$
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