જો $3\cos \theta + 4\sin \theta = 5$ અને $3\sin \theta - 4\cos \theta $ =
જો $3\cos \theta + 4\sin \theta = 5$ અને $3\sin \theta - 4\cos \theta $ =
- A
$1$
- B
$-1$
- C
$0$
- D
$\frac {1}{2}$
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- [IIT 1977]
જો $\tan A = \frac{1}{2},$ તો $\tan 3A = $
જો $\tan A = \frac{1}{2},$ તો $\tan 3A = $