Math, asked by Darkmanisback, 7 days ago

please answer question of maths 3

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Answered by rajneeshsharma4199

1

Answer:

okk... give answers of my question...

Step-by-step explanation:

prove that tan^-1(1/5)+tan^-1(1/3)-tan^-1(21/33) =tan^-1(1/7)

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