Math, asked by angalyanishwarya, 1 year ago

Prove that tan30+tan15+tan30.tan15=1

Answers

Answered by thelokeshgoel00

let us take tan45
it is equal to 1
now 45 can be written as 15+30
tan(15+30)=1
(tan15+tan30)/(1-tan15.tan30) =1
multiply both side by 1-tan15.tan30
tan15+tan30=1-tan15.tan30
tan15+tan30+tan15.tan30=1
hence proved.

if you didn't understand anything feel free to ask me

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