Trigonometry - Trigonometric Equations

Solve, for $0{}^\circ \le x \le 360{}^\circ$, the equation $\sin^2 x - 4 \sin x = 3 \cos^2 x$.

Video solution locked

A free account saves your progress; this video needs a course plan.

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Create a free account to practise similar questions.

Answer:$x=210^\circ,\ 330^\circ$

Need help? Join our A-Maths tuition classes.