Step-by-step explanation:
Hi there!
From the question;
|r| = 16
|s| = 9
And r.s = 125
We know that;
[tex]r.s = |r| . |s| \times \cos(θ) [/tex]
Now, Keep the values from given;
125 = 16*9*(cosθ)
cos θ= 125/144
cos θ = 0.86
θ = cos'(0.86)
θ = 30.68°
Therefore, the angle of θ made by vector r and s is 30.68°.
Hope it helps!
