Question

Can someone help me out with this question bh step by step procedure? ​

Answer 1

Answer:

60°

Step-by-step explanation:

the angle Θ between vectors a and b is

cosΘ = $\frac{a.b}{|a||b|}$ = $\frac{\frac{15}{2} }{3(5)}$ = $\frac{\frac{15}{2} }{15}$ = $\frac{1}{2}$ , then

Θ = $cos^{-1}$ ( $\frac{1}{2}$ ) = 60°

Answer 2

Answer:

cos θ= 60°

Step-by-step explanation:

cos θ= a . b/।a। ।b।

=15/2/3×5

=15/30

=1/2

cos θ=cos60°

θ=60