Question

The numerical value of cosec^2(73 degrees)-1/cot^2(17 degrees) is a)-1/2 b)1/2 c)1/3 d)1

Answer 1

Answer:

cosec ²(73)-1/cot²(90-73)

cosec ²(73)-1/tan²(73)

cosec ²(73)-cot²(73)

=1

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