Question

an angle between vector p and r is measure of 120.if p magnitude is equal to 8 and r magnitude is also 8 then calculate p(p-r)​

Answer 1

Answer:

0

Step-by-step explanation:

8(8-8)

=8*0

=0

Answer 2

Answer:

Step-by-step explanation:

p(p-r) = |p||p|cos0-|p||r|cos120

         = 8*8--8*8(-1/2)

          =64+32 = 96