यदि $\tan x = \frac{3}{4}$ और $\pi < x < \frac{3 \pi}{2}$ है,तो $\cos \frac{x}{2} = . . . . . .$

  • A
    $\frac{-2}{5}$
  • B
    $\frac{2}{5}$
  • C
    $\frac{1}{\sqrt{10}}$
  • D
    $\frac{-1}{\sqrt{10}}$

Explore More

Similar Questions

यदि $\tan A = \frac{1}{2}$ और $\tan B = \frac{1}{3}$ है,तो $\tan (A + 2B)$ का मान ज्ञात कीजिए।

यदि $3 \sin \theta = 2 \sin 3 \theta$ और $0 < \theta < \pi$ है,तो $\sin \theta =$

$\cos ^4 x$ का मान क्या है?

यदि $\sin^4 \theta \cos^2 \theta = \sum_{n=0}^{\infty} a_{2n} \cos 2n \theta$ है,तो $n$ का न्यूनतम मान जिसके लिए $a_{2n} = 0$ है,होगा

यदि $\tan A = \frac{1}{2}$ है,तो $\tan 3A = $

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