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I nDeltaA B C ,1-tan(A/2)tan(B/2)=...

`I nDeltaA B C ,1-tan(A/2)tan(B/2)=`

A

`(2c)/(a+b+c)`

B

`(a)/(a +b+c)`

C

`2/(a+b+c)`

D

`(4a)/(a+b+c)`

Text Solution

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A
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MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS-MULTIPLE CHOICE QUESTIONS - PART - B : MASTERING THE BEST
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  12. In Delta ABC, if : A = 60^(@), a = 5, b = 4sqrt(3), then B =

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  13. If, in a Delta ABC right angled at B, it is given that s - a = 3 and s...

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