UPSC NDA 2 2017 Mathematics Solved Paper

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Question : 29 of 120

Marks: +1, -0

In △PQR‌∠R=‌‌

π

2

,If tan(

P

2

) and tan(

Q

2

) are the roots of the equation ax2+bx+c=0, then which one of the following is correct?

[NDA II 2017]

a=b+c
b=c+a
c=a+b
b=c

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