Question
Mon April 23, 2012 By:

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

Expert Reply
Mon April 23, 2012
(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
Ask the Expert