The value of $ heta$ for which $\cos(10° + heta) = \sin 30°$, is

Question

The value of $	heta$ for which $\cos(10° + 	heta) = \sin 30°$, is

Accepted Answer

Step 1: $\cos(10° + 	heta) = \sin 30° = \cos 60° \Rightarrow 10° + 	heta = 60° \Rightarrow 	heta = 50°$

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