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If tan (B-C)/(2)=x cot (A)/(2) then x=...

If `tan (B-C)/(2)=x cot (A)/(2)` then `x=`

A

`(c-a)/(c+a)`

B

`(a-b)/(a+b)`

C

`(b-c)/(b+c)`

D

none of these

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HIMALAYA PUBLICATION-MEASUREMENT OF ANGLES, TRIGONOMETRIC RATIOS AND RELATION BETWEEN SIDES AND ANGLES OF A TRIANGLE-QUESTION BANK
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