[Hint: Simplify LHS and RHS separately]
1
(1 + tan’ A
11 + cot?A
(1 – tan A
11-cot A
= tan’ A
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Step-by-step explanation:
(1+tanA)(11+cotA)(1-tanA)(11-cotA)=tanA
LHS=sec^2A-tan^2A
RHS=tanA=1/cotA
jamuna59:
thank you for helping
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