Which of the following represents in terms of ?

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

Which of the following represents cos⁡2θ\cos^2\theta in terms of 2θ2\theta? (a) 1−cos⁡2θ2\dfrac{1-\cos2\theta}{2} (b) 1+sin⁡2θ2\dfrac{1+\sin2\theta}{2} (c) 1+cos⁡2θ2\dfrac{1+\cos2\theta}{2} (d) cos⁡2θ2\dfrac{\cos2\theta}{2}

Related theory

Browse the problem library