(Sin A + cos A)(sin A-1 + cosA ) sec A cosec A=___
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Step-by-step explanation:
(SinA+CosA)(SinA+CosA).SecA.CosecA
(Sin²A+Cos²A+2sina.cosa).1/(cosA.SinA)
(1+2SinA.CosA)/(SinA.CosA)
=1/(SinA.CosA) +2
=SecA.CosecA+2
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