(1 + Cot² A) (1 - Cos² A) = 1
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Step-by-step explanation:
L.H.S: (1+cot²A) (1-cot²A)..... Sin²A+Cos²A=1
1+cot²A=cosec²A
cosec²A x sin²A
1. x. Sin²A
Sin²A
= 1............... (*)
R.H.S : 1................... (#)
From(*) & (#)
L.H.S= R.H.S
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