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pechuotlilac


a) -4sin2x - 3√3 sin2x + 2cos2x = 1
b) 2sin2x + (1-√3)sinx.cosx + (1 - √3)cos2x = 1
c) 2sin2x – 5sinx.cosx – cos2x = -2
b) 2sin2x + (1-√3)sinx.cosx + (1 - √3)cos2x = 1
c) 2sin2x – 5sinx.cosx – cos2x = -2