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Two sides of a triangle are 6 m and 8 m ...

Two sides of a triangle are 6 m and 8 m long , and angle between them is increasing at the rate of `2^(@)` per sec. When the angle between them is `60^(@)`, the third side is increasing at the rate of

A

`(2 pi)/(5 sqrt39) m//s`

B

`(5 pi)/(2 sqrt39) m//s`

C

`(2sqrt39)/(5pi) m//s`

D

`(10 pi)/(sqrt39) m//s`

Text Solution

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The correct Answer is:
A
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