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tan ( a+b) =1/2 , tan (a-b)=1/3 then find value of tan 2a

tan ( a+b) =1/2 , tan (a-b)=1/3 then find value of tan 2a

Grade:12th pass

2 Answers

Deepak Kumar Shringi
askIITians Faculty 4407 Points
4 years ago
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poojitha
42 Points
4 years ago
Tan(a+b)=1/2,tan(a-b)=1/3Tan2a=tan[a+b+(a-b)] = tan(a+b)+tan(a-b)/[1-tan(a+b).tan(a-b)] = (1/2+1/3)/[1-(1/2.1/3)] = (5/6)/[1-(1/6)] = (5/6)/[5/6] = 1

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