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If in a triangle ABC , a=15 , b= 36 ,...

If in a triangle ABC `, a=15 , b= 36 , c = 39` then ` sin"" (C )/(2)`=

A

`( sqrt(3))/(2)`

B

`1/2`

C

`(1)/(sqrt(2))`

D

`-(1)/(2)`

Text Solution

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The correct Answer is:
D
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