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If P = (1/xp,p),Q=(1/xq,q),R=(1/xr,r) w...

If `P = (1/x_p,p),Q=(1/x_q,q),R=(1/x_r,r)` where `x_kne0,k =p,q , r ne N` , denotes the `k^(th)` term of a Harmonic progression , then

A

Area `(DeltaPQR)=(p^2q^2r^2)/2sqrt((p-q)^2+(q-r)^2+(r-p)^2)`

B

`DeltaPQR` is a right angled triangle

C

the points P,Q and R are collinear

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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