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Cos2A-3CosA+2/Sin2A=1 |
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Answer» Sorry cosA=1Proved Cos2A_3CosA+2=2sin2ACos2A_3cosA+2=2 (1_cos2A)Cos2A_3cos +2=2_2cos2A3cos2A_3cosA=03cosA (cosA_1)=0CosA_1=0CosA=0L.H.S=R.H.S |
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