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Cos2A-3CosA+2/Sin2A=1

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Cos2A-3CosA+2/Sin2A=1

    • Posted by Dattatraya Jagtap 4 years, 8 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Kiran Kumari 4 years, 8 months ago

    Sorry cosA=1 Proved

    1Thank You

    Kiran Kumari 4 years, 8 months ago

    Cos2A_3CosA+2=2sin2A Cos2A_3cosA+2=2 (1_cos2A) Cos2A_3cos +2=2_2cos2A 3cos2A_3cosA=0 3cosA (cosA_1)=0 CosA_1=0 CosA=0 L.H.S=R.H.S

    1Thank You

    ANSWER
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