Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesTrigonometrical ratios of multiple and sub-multiple angles
MediumIf $\tan x + \tan \left(x + \frac{\pi}{3}\right) + \tan \left(x + \frac{2\pi}{3}\right) = 3$,then $\tan 3x$ is equal to
- A$3$
- B$2$
- C$1$
- D$0$
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Similar Questions
If $\sin^3 x \sin 3x = \sum_{m=0}^n c_m \cos mx$ where $c_0, c_1, c_2, \dots, c_n$ are constants and $c_n \neq 0$,then the value of $n$ is
Difficult
View Solution$A$ true statement among the following identities is
$\cos^3 \frac{\pi}{8} \cos \frac{3\pi}{8} + \sin^3 \frac{\pi}{8} \sin \frac{3\pi}{8} = $
Prove that $\tan 4x = \frac{4 \tan x (1 - \tan^2 x)}{1 - 6 \tan^2 x + \tan^4 x}$.
Medium
View SolutionIf $\cosh x = \frac{5}{4}$,then $\tanh 3x =$
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