Math, asked by Gobind111, 1 year ago

proove that : tan(7a)-tan(5a)-tan(2a)=tan(7a)×tan(5a)×tan(2a)

Answers

Answered by phNoMENAL

16

Tan7a = tan(5a+2a)

= tan5a +tan 2a/ 1- tan5a tan2a

Tan7a -tan7a tan5a tan2a= tan5a + tan2a

Tan7a- tan5a -tan2a = tan7a tan5a tan2a

Proved

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