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23 May, 08:14

What is the answer of

7 cot^2 - 7 cosec^2 = ?

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Answers (1)
  1. 23 May, 08:23
    0
    -7.

    Step-by-step explanation:

    Using the identity cosec^2 x = 1 + cot^2 x we have

    7 cot^2 x - 7 (1 + cot^2 x)

    = 7 cot^2 x - 7 - 7cot^2 x

    = - 7.
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