Find Number of Solutions for tan3x Trig Equations MHF4U Test

[raghuveersingh]

sir can we able to find no. of solutions of tough trigonometric eqn. for ex(2sin^2x + sin^2x = 2 [-180<x<180]) by using graph if can please make a video on it .thanks, regards

[PoonamSingh-oizj]

Sir is this trick is only applied to find the no.of solution for tan or we can use it on cos and sin also ??