જો $\tan \alpha = \frac{1}{7}$ અને $\tan \beta = \frac{1}{3}$ હોય,તો $\cos 2\alpha = $

  • A
    $\sin 2\beta$
  • B
    $\sin 4\beta$
  • C
    $\sin 3\beta$
  • D
    આમાંથી કોઈ નહીં

Explore More

Similar Questions

$1 + \cos 2x + \cos 4x + \cos 6x = $

જો $\cos (\theta - \alpha ), \cos \theta$ અને $\cos (\theta + \alpha )$ એ $H.P.$ માં હોય,તો $\cos \theta \sec \frac{\alpha }{2}$ ની કિંમત શોધો.

Difficult
View Solution

$\cot\, x + \cot\, (60^\circ + x) + \cot\, (120^\circ + x)$ ની કિંમત કોના બરાબર છે?

જો $A + C = B$ હોય,તો $\tan A \tan B \tan C = $

આપેલ છે કે $\pi < \alpha < \frac{3\pi}{2},$ તો પદાવલિ $\sqrt{4\sin^4 \alpha + \sin^2 2\alpha} + 4\cos^2 \left( \frac{\pi}{4} - \frac{\alpha}{2} \right)$ ની કિંમત શોધો.

Difficult
View Solution

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