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If P -= ((1)/(x(p)), p ), Q = ((1)/(x(q...

If ` P -= ((1)/(x_(p)), p ), Q = ((1)/(x_(q)),q), R = ((1)/(x_(r)), r)`
where ` x _(k) ne 0 `, denotes the ` k^(th) ` terms of a H.P. for ` k in N `, then :

A

ar. `( Delta PQR)= (p^(2)q^(2)r^(2))/(2) sqrt((p-q)^(2) + (q-r)^(2) + (r-p)^(2))`

B

` Delta PQR` is a right angled triangle

C

the points P,Q, R are collinear

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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