A-Level Maths Edexcel (9MA0)

Solve simple trigonometric equations in a given interval, including quadratic equations in $\sin$, $\cos$ and $\tan$ and equations involving multiples of the unknown angle.

Students should be able to solve equations such as

• $\sin{(x + 70°)} = 0.5$ for $0 < x < 360°$,
• $3 + 5\cos{2x} = 1$ for $-180° < x < 180°$, and
• $6\cos^2{x} + \sin{x} − 5 = 0$ for $0 ≤ x < 360°$

These may be in degrees or radians and this will be specified in the question.