$\triangle ABC$ में,$(r_1+r_2) \operatorname{cosec}^2 \frac{C}{2} =$

  • A
    $2 R \cot ^2 \frac{C}{2}$
  • B
    $4 R \tan ^2 \frac{C}{2}$
  • C
    $4 R \cot ^2 \frac{C}{2}$
  • D
    $2 R \tan ^2 \frac{C}{2}$

Explore More

Similar Questions

त्रिभुज $ABC$ में,सामान्य संकेतों के साथ,यदि $\frac{2 \cos A}{a} + \frac{\cos B}{b} + \frac{2 \cos C}{c} = \frac{a}{bc} + \frac{b}{ca}$ है,तो $\angle A = $

$\triangle ABC$ में,व्यंजक $\frac{(a+b+c)(b+c-a)(c+a-b)(a+b-c)}{4b^2c^2}$ किसके बराबर है?

$\triangle ABC$ में,यदि $A, B, C$ समांतर श्रेणी में हैं,तो $\sqrt{a^2-ac+c^2} \cdot \cos \left(\frac{A-C}{2}\right) =$

$\triangle ABC$ में,$\left(\tan \frac{A}{2}+\tan \frac{B}{2}\right) \tan \frac{C}{2} =$

$\Delta ABC$ में,$\frac{b \sin(C - A)}{c^2 - a^2} + \frac{c \sin(A - B)}{a^2 - b^2}$ 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