Find the range of such that the equation has real solutions

MATHEMATICS · Subjective · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

Find the range of yy such that the equation y+cos⁡x=sin⁡xy+\cos x=\sin x has real solutions. For y=1y=1, find xx such that 0<x<2π0<x<2\pi.

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