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In a triangle ABC, if angle A=60^@ a=5 ,...

In a triangle ABC, if `angle A=60^@` a=5 , b=4 then
c is a root of the equation

A

`c^2-5c-9=0`

B

`c^2-4c-9=0`

C

`c^2-10c+25=0`

D

`c^2-5c-41=0`

Text Solution

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The correct Answer is:
B
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