यदि $A + B + C = 270^o$ है,तो $\cos 2A + \cos 2B + \cos 2C + 4\sin A \sin B \sin C = $

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $3$

Explore More

Similar Questions

$\sin 10^\circ + \sin 20^\circ + \sin 30^\circ + ... + \sin 360^\circ$ का मान क्या है?

एक त्रिभुज में,यदि $\tan A + \tan B + \tan C = 6$ और $\tan A \tan B = 2$ है,तो $\tan A, \tan B$ और $\tan C$ के मान हैं:

यदि $(1+\tan ^{2} \theta)=\frac{625}{49}$ और $\theta$ न्यूनकोण है,तो $\sqrt{\sin \theta+\cos \theta}$ का मान क्या है?

Difficult
View Solution

यदि $\frac{\sec 8\theta - 1}{\sec 4\theta - 1} = \frac{a + b\tan^2 2\theta}{1 + c\tan^2 2\theta + d\tan^4 2\theta}$ (जहाँ $\theta \neq \frac{n\pi}{16}, n \in I$),तो $(a - b + c - d)$ का मान है -

$\cos^2 48^\circ - \sin^2 12^\circ = $

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