2sinAcosA-cosA-2sinA+1=0
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2sinAcosA - cosA - 2sinA +1 = 0
2sinA(cosA - 1) = cosA - 1
2sinA = cosA - 1/cos - 1
2sinA = 1
sinA = 1/2
A = 30°
Hope this helps you...:)
2sinA(cosA - 1) = cosA - 1
2sinA = cosA - 1/cos - 1
2sinA = 1
sinA = 1/2
A = 30°
Hope this helps you...:)
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