The range of is

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

Problem

The range of f(x)=cos⁡x−sin⁡xf(x)=\cos x-\sin x is (a) (−1,1)(-1,1) (b) [−1,1)[-1,1) (c) [−π2,π2]\left[-\frac{\pi}{2},\frac{\pi}{2}\right] (d) [−2,2][-\sqrt{2},\sqrt{2}]

Related theory

Browse the problem library