Question

A.B is equal to |A×B| the angle between them

Answer 1

Answer:

45°

Explanation:

AB cos theta = AB sin theta

We can write cos theta as sin (90- theta)

AB sin(90-theta) = AB sin theta

therefore ,

90-theta = theta

2theta = 90°

theta = 90°/2 = 45°

hope this will help you

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