$\cos \frac{\pi}{7} \cos \frac{2\pi}{7} \cos \frac{3\pi}{7} =$

  • A
    $-\frac{1}{8}$
  • B
    $\frac{1}{16}$
  • C
    $\frac{1}{8}$
  • D
    કોઈ નહીં

Explore More

Similar Questions

નીચેનામાંથી કયા વિધેયોનું મહત્તમ મૂલ્ય એક (unity) છે?

જો $x = y \cos \frac{2\pi}{3} = z \cos \frac{4\pi}{3}$ હોય,તો $xy + yz + zx = $

$(8 \sec^2 \theta + 2 \cos^2 \theta)$ નું ન્યૂનતમ મૂલ્ય કેટલું થાય?

જો $m \tan (\theta - 30^\circ) = n \tan (\theta + 120^\circ)$ હોય,તો $\frac{m + n}{m - n} = $

$\frac{\sec 8\theta - 1}{\sec 4\theta - 1}$ ની કિંમત શોધો.

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