Find the general solution of the equation, 2 sin x + cos x = 1 + sin x.
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Answer:
4sinxcosx+2sinx+2cosx+1=0
2sinx(2cosx+1)+1(2cosx+1)=0
(2cosx+1)(2sinx+1)=0
cosx=
2
−1
(or)sinx=
2
−1
x=−30
o
or120
o
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