4sinA×cosA=1-2sinA+2cosA find A
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4sinA.cosA + 2sinA = 1+ 2cosA
2sinA(2cosA +1 ) = 1+2cosA
then
2sinA = 1
sinA = 1/2
sinA = sin (π/6)
then A = nπ+π/6 where n is whole numbers
there fore A can be π/6, 7π/6, .........so on
2sinA(2cosA +1 ) = 1+2cosA
then
2sinA = 1
sinA = 1/2
sinA = sin (π/6)
then A = nπ+π/6 where n is whole numbers
there fore A can be π/6, 7π/6, .........so on
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