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If sin theta + 2cos theta …

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If sin theta + 2cos theta =1 Prove that 2sin theta - cos theta=2

    • Posted by Tanya Zanzad 6 years, 10 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Jatt Putt Aryan???? 6 years, 10 months ago

    Sq. Both side......sin2@+4cos2@+4cos@sin@=1.......... 1-cos2@+4(1-sin2@)+4cos@sin@=1......1-cos2@+4-4sin2@+4cos@sin@=1.......-cos2@-4sin2@+4cos@sina=4....(2sin@-cos@)^2=4......2sin@-cos@=2(H.P)

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