Question

if the dot and cross product of two vectors A and B are equal in magnitude, the angle between two vectors is
a. π/4
b. π/2
c. 2π/3
d. π
​

Answer 1

Answer:

a. pie/4

Explanation:

A.B = AB Cos theta

A×B = AB Sin theta

Now according to question

AB Sin theta = AB Cos theta

tan theta = 1

and tan 45° = 1

therefore angle equals to pie/4