Question

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Answer 1

Answer:

can not understand this question

Answer 2

Answer:

We first multiply the numerator and denomiator of LHS by (cosec A - cotA) to make the numerator into a identity.

so LHS becomes [(cosecA)^2 - (cotA)^2]/cosecA - cotA

                            = [(1 + (cotA)^2) - (cotA)^2]/cosecA - cotA

                             [as (cosecA)^2= 1 + (cotA)^2]

                            =1/ cosecA - cotA