hello pavan sir.i am having trouble solving this problem.can u help me as soon as possible?

Asked by  | 23rd Apr, 2012, 11:11: AM

Expert Answer:

(cosec A)/(cosec A-1) + (cosec A)/(cosec A+1)
Taking LCM, we get
cosec A(cosec A+1) + cosec A(cosec A-1) /(Cosec2A - 1)
= cosec2A + cosec A + cosec2A - cosecA /(Cosec2A - 1)
= 2cosec2A /cot2A
= 2sec2A

Answered by  | 23rd Apr, 2012, 11:55: AM

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