Question

If sin^2A+cosec^2A=2 if sinA +cosec A=?

Answer 1

Sin A+1/Sin A=2
(Sin A)^2+1=2*Sin A
(Sin A)^2-2*Sin A+1=0
(Sin A-1)^2=0
Sin A=1
CosecA=1
sin^2 A + cosec^2 A =2

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