જો $\tan \theta = \frac{\sin \alpha - \cos \alpha}{\sin \alpha + \cos \alpha}$ અને $0 \leq \alpha \leq \frac{\pi}{2}$ હોય,તો $\cos 2 \theta$ ની કિંમત શોધો.

  • A
    $\cos 2 \alpha$
  • B
    $\sin \alpha$
  • C
    $\cos \alpha$
  • D
    $\sin 2 \alpha$

Explore More

Similar Questions

જો $\alpha, \beta, \gamma$ કોઈ પણ ત્રણ ખૂણાઓ હોય,તો $\cos \alpha + \cos \beta - \cos \gamma - \cos (\alpha + \beta + \gamma) =$

$\frac{\tan 80^{\circ}-\tan 10^{\circ}}{\tan 70^{\circ}}$ ની કિંમત શોધો.

જો $\theta \in \left(0, \frac{\pi}{2}\right)$ માટે $\tan 3\theta \cdot \tan 2\theta \cdot \tan \theta + \tan 2\theta + \tan \theta = 1$ હોય,તો $\theta =$

જો $\theta$ અને $\phi$ એ $1^{st}$ ચરણમાં આવેલા ખૂણાઓ હોય કે જેથી $\tan \theta = 1/7$ અને $\sin \phi = 1/\sqrt{10}$ હોય,તો:

$\frac{\sin^2 A - \sin^2 B}{\sin A \cos A - \sin B \cos B} = $

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo