Math

Factorthen use fundamental identities to simplify the expression below and determine which of the following is not equivalent cot^2 a * tan^2 a + cot^2 a A. csc^ 2 alpha B.1/ sin^ 2 alpha C.1/ 1-cos^ 2 alpha D.sec^ 2 alpha E.1+cot^ 2 alpha

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  1. cot^2 a * tan^2 a + cot^2 a

    cot²a(tan²a+1)
    Recall that

    Tan²a+1=1/cos²a
    1/sin²a=cosec²a
    So
    (Cos²a/sin²a)/cos²a

    1/sin²a=cosec²a

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