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In a triangle ABC, if 2b=a+c and A-C=90,...

In a triangle ABC, if `2b=a+c` and `A-C=90`, then `sin B` equals

A

`(sqrt(7))/(5)`

B

`(sqrt(5))/(8)`

C

`(sqrt(7))/(4)`

D

`(sqrt(5))/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
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