ट्रिगोनोमेट्री उदाहरण

$\cos (2 x) + \cos (3 x) + \cos (4 x) + \cos (5 x) = 0$

चरण 1

$\cos (2 x) + \cos (3 x) + \cos (4 x) + \cos (5 x) = 0$

चरण 2

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$