Solving Trigonometric Equations https://www.youtube.com/watch?v=IE0FxGegdMg&t=232s Important points to be taken in case of while solving trigonometrical equationsCheck the validity of the given equation, e.g. 2 sin θ – cos θ = 4 can never be true for any θ as the value (2 sin θ – cos θ) can never exceeds √(22 + (−1)2) = √5. So there is no solution of this equation. … [Read more...] about Solving Trigonometric Equations