Given that a+b+c=0.out of these three vector two are equal in magnitude and the magnitude of the third vector is root two times as that of either vector. Angle between vectors will be

A body is rotating with an angular velocity of 2radians per second about the line joining (1, 2,3) and (2, 3,5) find the velocity of the particle of the body which is momentarily at (3, 5,6) 

 

Show that: vectorPQ+vectorPR+ vectorPS +vectorTP+vectorUP = 4PQ

Vector

Given that A×(B×C) = (A.C)B - ( A.B)C , deduce that (A×B)×C = (A.C)B - (B.C)A

the mean of 30 observations was 17 with sd2. later it was found that two of the observations were incorrect, which were recorded as 19vand 21.find the correct sd if the incorrect values are deleted and correct values 22 and 15 are included

Find the component of 2i +3j +k in the direction of 3i-j