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Let theta be an angle in quad III such that sec theta = -13/5. Find the exact values of cot theta and sin theta?

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  1. sec Ø = -13/5 in quad II
    so cosØ = -5/13
    x = -5, r = 13 and y = +12

    sinØ = 12/13
    cotØ = -5/12

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