dhruba
Last Activity: 3 Years ago
i hope u could make the figure there u can see that the angle between p vector and resultant vector equals 30 degree as given now complete the parallelogram and u get a traingle let the angle between r vector and q vector =theta ….then angle between p vector and q vector =150-theta )angle sum property) ….now just apply the sine rule so
you get sin 30^/q=sin theta/p =sin(150-theta)/root3q
then u get
p/q=2sin theta
and sin(150-theta)=root3/2
so.150-theta=60 ….theta=90^
therefore p/q=2sin theta=2 x (sin 90^)=2
