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March 25, 2017

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I need HELP Verify the identity
Cot3X/CSCX=cosX(csc2X-1)

  • trig - ,

    testing if x = 20ยบ
    LS = cot60/csc20
    = sin20/tan60 = .1975
    RS = cos20(1/sin40 - 1)
    = .5222

    Your equation is NOT an identity.

    A check should always be your first step when proving complicated-looking trig "identities".

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