![prove that : sin pi/5 * sin 2pi/5 * sin 3pi/5 * sin 4pi/5 = 5/16 - Maths - Trigonometric Functions - 2777254 | Meritnation.com prove that : sin pi/5 * sin 2pi/5 * sin 3pi/5 * sin 4pi/5 = 5/16 - Maths - Trigonometric Functions - 2777254 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/discuss_editlive/3021597/2012_08_08_15_01_34/mathmlequation8718178632575865291.png)
prove that : sin pi/5 * sin 2pi/5 * sin 3pi/5 * sin 4pi/5 = 5/16 - Maths - Trigonometric Functions - 2777254 | Meritnation.com
![trigonometry - How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$ - Mathematics Stack Exchange trigonometry - How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$ - Mathematics Stack Exchange](https://i.stack.imgur.com/PYq30.png)
trigonometry - How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$ - Mathematics Stack Exchange
![complex numbers - Need help to understand how to deduce the value of $\cos^2 \displaystyle\big(\frac{\pi}{5}\big)+\cos^2\big(\frac{2\pi}{5}\big)$ - Mathematics Stack Exchange complex numbers - Need help to understand how to deduce the value of $\cos^2 \displaystyle\big(\frac{\pi}{5}\big)+\cos^2\big(\frac{2\pi}{5}\big)$ - Mathematics Stack Exchange](https://i.stack.imgur.com/XtQbG.png)
complex numbers - Need help to understand how to deduce the value of $\cos^2 \displaystyle\big(\frac{\pi}{5}\big)+\cos^2\big(\frac{2\pi}{5}\big)$ - Mathematics Stack Exchange
Prove that: sin^2(2π/5) - sin^2(π/3) = (√5 - 1)/8 - Sarthaks eConnect | Largest Online Education Community
![साबित करें कि `sin. ( pi)/(5) sin . ( 2pi)/(5) sin . ( 3pi)/( 5) sin . ( 4pi)/( 5) =(5)/( 16)` - YouTube साबित करें कि `sin. ( pi)/(5) sin . ( 2pi)/(5) sin . ( 3pi)/( 5) sin . ( 4pi)/( 5) =(5)/( 16)` - YouTube](https://i.ytimg.com/vi/NKcps3NmVPw/mqdefault.jpg)