IF SIN A+COSEC A=2 THEN FIND THE VALUE OF SIN SQUARE A + COSEC SQUER A
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sin A + 1/sin A = 2
sin^2 A - 2sin A +1 = 0
(sin A - 1) ^2 = 0
therefore , sin A =1
thus sin^2 A + cosec^2 A = sin^2 + 1/ sin^2 A = 1 + 1 = 2
sin^2 A - 2sin A +1 = 0
(sin A - 1) ^2 = 0
therefore , sin A =1
thus sin^2 A + cosec^2 A = sin^2 + 1/ sin^2 A = 1 + 1 = 2
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