Question

find the angle between the vectors a=2i+3j+4k and b=3i-5j+k​

Answer 1

Answer:

$13 + = - \times {22 = 1 + 1 = }^{?} \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?} - 5yyx$