![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
![The number of values of x between 0 and 2pi that satisfies the equation sin x + sin 2x + sin 3x = cos x + cos 2x + cos 3x, , are The number of values of x between 0 and 2pi that satisfies the equation sin x + sin 2x + sin 3x = cos x + cos 2x + cos 3x, , are](https://toppr-doubts-media.s3.amazonaws.com/images/9051706/945b2476-6ee2-4778-b42c-a7794f63f42b.jpg)
The number of values of x between 0 and 2pi that satisfies the equation sin x + sin 2x + sin 3x = cos x + cos 2x + cos 3x, , are
![Basic Trig Identities sin^2 (x) + cos ^2 (x) = 1 sin(-x) = -sin(x), cos(-x) = cos(x), tan(-x) = -tan(x) sin(x + 2Pi) = sin(x), cos(x + 2*Pi) = cos(x), - ppt download Basic Trig Identities sin^2 (x) + cos ^2 (x) = 1 sin(-x) = -sin(x), cos(-x) = cos(x), tan(-x) = -tan(x) sin(x + 2Pi) = sin(x), cos(x + 2*Pi) = cos(x), - ppt download](https://slideplayer.com/6879554/23/images/slide_1.jpg)
Basic Trig Identities sin^2 (x) + cos ^2 (x) = 1 sin(-x) = -sin(x), cos(-x) = cos(x), tan(-x) = -tan(x) sin(x + 2Pi) = sin(x), cos(x + 2*Pi) = cos(x), - ppt download
![Evaluate the Definite Integrals `Int_(Pi/6)^(Pi/3) (Sin X + Cosx)/Sqrt(Sin 2x) Dx` - Mathematics | Shaalaa.com Evaluate the Definite Integrals `Int_(Pi/6)^(Pi/3) (Sin X + Cosx)/Sqrt(Sin 2x) Dx` - Mathematics | Shaalaa.com](https://www.shaalaa.com/images/_4:9784478c52ef41c08058cef9b4197904.png)