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In a triangle PQR, angleR = pi //2. If t...

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

A

`a+b=c`

B

`b+c=a`

C

`a+c=b`

D

none of these

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The correct Answer is:
A
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