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In Delta ABC , if a= 2, b= 3 , c=4 th...

In ` Delta ABC , if a= 2, b= 3 , c=4 ` then cos A =

A

` ( 7)/( 8) `

B

` ( 5)/( 7) `

C

` ( 6)/( 7) `

D

` ( 5)/(8) `

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A
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AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE EXERCISE
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