Math, asked by protham, 1 year ago

prove that..tan20tan40tan80=√3

Answers

Answered by MakutoShiedo

Hey dear :D

Apply the formula , that is -

tan¢ . tan ( 60 - ¢) . tan (60 + ¢ ) = tan 3 ¢

Substitute the values

tan 20. tan (60-20) . tan (60 + 20) = tan 3 ×20

tan 20. tan 40. tan 80 = tan 60

tan 20. tan 40. tan 80 = √3

hence proved!

hope it helps!! ^^

protham: but I want to use this formula.. tan(A+B)tanA+tanB/1-tanAtanB

protham: sorry..it is tan(A+B)=........

MakutoShiedo: that can also be applies

MakutoShiedo: applied*

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