Question

The value of { 7/cot^2 theta - 7/cos^2 theta} is?​

Answer 1

Step-by-step explanation:

Sorry, The photo is not so nice

But the final answer is -7

Hope you understand

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Answer 2

$\frac{7}{cot²} - \frac{7}{cos {}^{2} } \\ \frac{7}{ \frac{cos {}^{2} }{ {sin}^{ \\ 2} } } - \frac{7}{cos {}^{2} } \\ \frac{7sin {}^{2} }{cos {}^{2} } - \frac{7}{cos {}^{2} } \\ \frac{7sin {}^{2} - 7 }{cos {}^{2} } \\ \frac{7(sin {}^{2 } - 1) }{cos {}^{2} } \\ \frac{ - 7cos {}^{2} }{cos {}^{2} } \\ = - 7$