यदि $m \cos (\alpha+\beta)-n \cos (\alpha-\beta)=m \cos (\alpha-\beta)+n \cos (\alpha+\beta)$ है,तो $\tan \alpha \tan \beta=$

  • A
    $m+n$
  • B
    $m-n$
  • C
    $-\frac{n}{m}$
  • D
    $\frac{m}{n}$

Explore More

Similar Questions

यदि $A=35^{\circ}, B=15^{\circ}$ और $C=40^{\circ}$ है,तो $\tan A \cdot \tan B+\tan B \cdot \tan C+\tan C \cdot \tan A$ का मान ज्ञात कीजिए।

यदि $\cos (\alpha + \beta ) = \frac{4}{5}$,$\sin (\alpha - \beta ) = \frac{5}{13}$ और $\alpha, \beta$ का मान $0$ और $\frac{\pi}{4}$ के बीच है,तो $\tan 2\alpha = $

$\tan 15^\circ = $

$2 \cosh (x+y) \sinh (x-y) + \sinh 2y =$

यदि $(1+\tan \alpha)(1+\tan 4 \alpha)=2$ और $\alpha \in \left(0, \frac{\pi}{16}\right)$ है,तो $\alpha$ का मान ज्ञात कीजिए।

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