Question

The value of θ for which cos(10° + θ) = sin30°, is

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Answer 1

Answer:

sin 30°=1/2

as we now that cos 60° = 1/2

so we we take theta = 50°

then,

cos(10°+50°)=sin 30°

cos 60°=sin 30°

1/2=1/2

I hope it helps u