4 marksSolving Simple Trigonometric Equations

CSEC Additional Mathematics · 2018 · Paper 2 · Question 4(b)

Solve the equation sin^2(theta) + 3 cos(2*theta) = 2 for 0 <= theta <= pi. Give your answer(s) to 1 decimal place.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

4(a)Determine, in radians, the angle of the sector, giving your answer in terms of pi.[4 marks]
4(c)Prove the identity 1/(1 - sin x) - 1/(1 + sin x) = 2 tan x / cos x.[4 marks]

More practice: the rest of this paper · more Solving Simple Trigonometric Equations questions · all CSEC Additional Mathematics past papers