यदि $\tan \theta_1 = k \cot \theta_2$ है,तो $\frac{\cos (\theta_1 + \theta_2)}{\cos (\theta_1 - \theta_2)} = $

  • A
    $\frac{1+k}{1-k}$
  • B
    $\frac{1-k}{1+k}$
  • C
    $\frac{k+1}{k-1}$
  • D
    $\frac{k-1}{k+1}$

Explore More

Similar Questions

मान ज्ञात कीजिए: $\sqrt{3} \operatorname{cosec} 20^{\circ} - \sec 20^{\circ}$

यदि $\frac{\cos x}{\cos (x-2 y)}=\lambda$ है,तो $\tan (x-y) \tan y$ का मान क्या होगा?

यदि $\operatorname{Sinh}^{-1}(2)+\operatorname{Sinh}^{-1}(3)=\alpha$ है,तो $\sinh \alpha=$

यह ज्ञात है कि $\sin \beta = \frac{4}{5}$ और $0 < \beta < \pi$. तब $\frac{\sqrt{3} \sin(\alpha + \beta) - \frac{2}{\cos(\pi/6)} \cos(\alpha + \beta)}{\sin \alpha}$ का मान क्या है?

Difficult
View Solution

$\left( 1 + \cos \frac{\pi }{9} \right) \left( 1 + \cos \frac{3\pi }{9} \right) \left( 1 + \cos \frac{5\pi }{9} \right) \left( 1 + \cos \frac{7\pi }{9} \right)$ का मान है

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