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

If vecP*vecQ=0 , then angle between vecP and vecQ is 0^@ .

If |vecP xx vecQ| = PQ , then angle between vecP and vecQ is

The vectors vecP and vecQ have equal magnitudes of vecP +vecQ is n times the magnitude of vecP-vecQ , then angle between vecP and vecQ is:

If |vecP + vecQ| = |vecP -vecQ| the angle between vecP and vecQ is

If |vecP + vecQ| = |vecP -vecQ| the angle between vecP and vecQ is

If vecP . vecQ =IvecP X vecQI the angle between vecP and vecQ is.

If vectors vecP,vecQ and vecR have magnitude 5,12 and 13 units and vecP+vecQ=vecR , the angle between vecQ and vecR is :

If vecP xx vecQ=vecQ xx vecP , the angle between vecP and vecQ is theta(0^(@) lt theta lt 360^(@)) . The value of ' theta ' will be __________ ""^(@) .

vecP, vecQ, vecR, vecS are vector of equal magnitude. If vecP + vecQ - vecR=0 angle between vecP and vecQ is theta_(1) . If vecP + vecQ - vecS =0 angle between vecP and vecS is theta_(2) . The ratio of theta_(1) to theta_(2) is