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In a triangle ABC, If s-a/11=s-b/12=s-c/13, thenTan^2 (A/2) is equal to

In a triangle ABC, If s-a/11=s-b/12=s-c/13, thenTan^2 (A/2) is equal to

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
3 years ago
a/11 = b/12 = c/13

find LCM(a/11,b/12,c/13)

that is how you'll figure sides

and then you can find angle immediately

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