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In trianle ABC, CD is the bisector of th...

In trianle ABC, CD is the bisector of the angle C. if `cos . C/2 = 1/3 ` and CD = 6, then the value of `(1/a + 1/b) = 1/lambda , " then " lambda` is

A

3

B

6

C

9

D

12

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The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - III (Straight Objective Type Question)
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