Question

Cot square theta minus 1 upon sin square theta equals to 1

Answer 1

Step-by-step explanation:

cot^2A-1/sin^2A

write cot^2A as cos^2A/sin^2A

cos^2A-sin^2A/sin^2A(1/sin^2A)

cos2A/sin^4A

Ans: cos2A/sin^4A

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Answer 2

=> cot ^2 ø - 1 / sin ^2 ø

=> cos ^2 ø / sin ^2 ø - 1 / sin ^2 ø

=> cos ^2 ø - 1 / sin ^2 ø

=> - sin ^2 ø / sin ^2

=> - 1

i.e., cot ^2 ø - 1 / sin ^2 ø = - 1

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