Identify the general solution of (where is any integer).

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

Problem

Identify the general solution of cos⁡x=cos⁡α\cos x = \cos \alpha (where nn is any integer). (a) x=nπ±αx = n\pi \pm \alpha (b) x=nπ+(−1)nαx = n\pi + (-1)^{n}\alpha (c) x=2nπ±αx = 2n\pi \pm \alpha (d) x=2nπ+αx = 2n\pi + \alpha

Related theory

Browse the problem library