A particle moves so that its position vector varies with time as vecr=A cos omega thati+Asin omegathatj. Find the (a)initial velocity of the particle (b) angle between the position vector and velocity of the particle atony time (c) speed at any instant.

A particle moves so that its position vector varies with time as vecr=

1.	A particle moves so that its position vector varies with time as vecr=A cos omega thati+Asin omegathatj. Find the (a)initial velocity of the particle (b) angle between the position vector and velocity of the particle atony time (c) speed at any instant.
Answer» ANSWER :(a)`A omegahatj;`(B)`vecv+vecr;`©`A OMEGA`