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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 the equation ` ax ^2 + bx +c=0 ( a ne 0)` then

A

a+b+c

B

b+c=a

C

a+c=b

D

b=c

Text Solution

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The correct Answer is:
A
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