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In DeltaABC 2a^2+4b^2+c^2=2ab+2ac then n...

In `DeltaABC` `2a^2+4b^2+c^2=2ab+2ac` then numerical value of `cosB` is

A

0

B

`(3)/(8)`

C

`(5)/(8)`

D

`(7)/(8)`

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The correct Answer is:
D
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MOCK TEST 1-MCQS
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