Question

Find the value of 9 cot square -9 cosec square a

Answer 1

Solution :

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We know the Trigonometric identity :

Cosec² A - cot²A = 1

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Now ,

9cot²A - 9cosec²A

= -9 ( cosec² A - cot² A )

= -9 × 1

= -9

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Answer 2

Answer:

-9 is the answer of the above text