cosec A (1 + cos A) (cosec A - cot A) = 1
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Step-by-step explanation:
cosecA(1+cosA) (cosecA-cotA)
= cosecA+ cosecA cosA (cosecA-cotA)
= (cosecA+cotA) (cosecA-cotA) [cosecA cosA = cotA]
= cosec²A - cot²A [ (a+b) (a-b) = a²-b²)
= 1 [ cosec²A = 1+cot²A]
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no I'm not a answer sorry this
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