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In any triangle ABC, if a="\ "18 , b="\ ...

In any triangle ABC, if `a="\ "18 , b="\ "24 , c="\ "30` , find cosA, cosB, cosC

A

`(1)/(5)`

B

`(2)/(5)`

C

`(3)/(5)`

D

`(4)/(5)`

Text Solution

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The correct Answer is:
D
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