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In a triangle PQR, angle R=(pi)/(2). If ...

In a triangle `PQR, angle R=(pi)/(2). If tan ""P/2 and tan ""Q/2` are the roots of `ax^(2) +bx+c=0 (a ne 0) ` then-

A

`b=c`

B

`a=b+c`

C

`c=a +b`

D

`b=a+c`

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The correct Answer is:
C
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