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If vecP+vecQ=vecR" & "vecR is perpendicu...

If `vecP+vecQ=vecR" & "vecR` is perpendicular to `vecP`.
define angle between `vecP" & "vecQ" if " vec|P|=vec|R|-`

A

`(3pi)/(4)`

B

`(pi)/(4)`

C

`pi`

D

`(pi)/(2)`

Text Solution

Verified by Experts


If `vec|P|=vec|R|`
than `alpha=45^(@)`
So angle between `vecP" & "vecQ`.
`=90^(@)+45^(@)=135^(@)=(3pi)/(4)`
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Knowledge Check

  • If vecP.vecQ=PQ then angle between vecP and vecQ is

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    `|vecP|=1`
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