Math, asked by amanthakur113114, 11 months ago

prove that tan 20tan30tan tan40tan80=1
​

Answers

Answered by firuja
1

Answer:

LHS=tan20tan30-tan(90_20)tan(90-30). 1 by cot 20,1by cot 30,cot 20,cot 30. then,1 by cot 20 and cot 20 is cancel and 1by cot 30 and cot 30 is cancel.finally result 1 =RHS proved

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