Question

cosecO + cotO = m and cosecO - cotO = n prove mn = 1

Answer 1

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Answer 2

cosecø + cot ø =m ------(1)

cosec ø-cotø =n -----(2)

by (1)*(2)

(cosec ø-cotø)(cosec ø+cotø) = cosec²ø - cot²ø

nm = 1 [°.° cosec²ø-cot²ø =1 ]

hence proved .. hope i am able to help u.........