Question

if the two velocity a and b are perpedicular to each other what is the value of A.B
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Answer 1

Answer:

a.b or scalar product of a and b = a b cos theta.... here as vector a and b are perpendicular to each other, the angle (theta) between them is 90°... Now cos 90°=0...so a b cos 90°=0.... hence a.b = 0.

Answer 2

Explanation:

a.b or scalar product of a and b = a b cos theta.... here as vector a and b are perpendicular to each other, the angle (theta) between them is 90°... Now cos 90°=0...so a b cos 90°=0.... hence a.b = 0.