Question

write the value of cot2A - 1/sin2A
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Answer 1

Answer:

cos2A/sin2A-1/sin2A

=cos2A-1/sin2A

=sin2A/sin2A=1

Hence, 1 is the answer .

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Answer 2

Answer:

cot²A-1/sin²A

or, cot²A-cosec²A

or, -(-cot²A+cosec²A)

or, -(cosec²A-cot²A)

or, -1 {cosec²A-cot²A=1}

Thus, cot²A-1/sin²A= -1

Step-by-step explanation:

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