2 Sin A cos A - Cos A - 2 Sin A + 1 = 0
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Answer:
A=30 degree or 0degree
Step-by-step explanation:
2sinAcosA-cosA-2sinA+1=0
cosA(2sinA-1)-(2sinA-1)=0
(cosA-1)*(2sinA-1)=0
(cosA-1)=0
cosA=1
A=0
or
(cosA-1)*(2sinA-1)=0
(2sinA-1)=0
sinA=1/2
A=30
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