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Given that P 12, Q = 5 and R = 13 also P...

Given that P 12, Q = 5 and R = 13 also P+Q=R, then the angle between P and Q will be

A

`pi`

B

`(pi)/(2)`

C

zero

D

`(pi)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
`R = sqrt(P^2 + Q^2 + 2PQ cos theta)`
Substituting the values of P,Q and R we get,
`cos theta = 0`
`rArr theta = 90^@.`
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