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In triangle ABC, a, b, c are the lengths...

In triangle ABC, a, b, c are the lengths of its sides and A, B C are the angles of triangle ABC. The correct relation is

A

`(b - c ) sin ((B - C)/2) = a cos . A/2`

B

`(b - c) cos (A/2) = a sin . (B - C)/2`

C

`(b +c) sin ((B+C)/2) = a cos . A/2`

D

`(b - c) cos (A/2) = 2 a sin . (B + C)/2`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - II(Straight Objective Type Questions)
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