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Questions  

General solutions of the equations  sinx=12 and cosx=32 is

a
x=2nπ+π6
b
x=2nπ+5π6
c
x=2nπ+7π6
d
x=2nπ+11π6

detailed solution

Correct option is C

We have sinx=−12<0 and cosx=−32<0∴x belongs to 3rd quadrant and x=π+π6=7π6∴General solution is  x=2nπ+7π6,n∈z

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