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Question: If the angle between \(\overrightarrow{A}\) and \(\overrightarrow{B}\) is 270°, then \(\overrightarr...

If the angle between A→\overrightarrow{A} and B→\overrightarrow{B} is 270°, then A→.B→\overrightarrow{A}.\overrightarrow{B} is-

A

(a) 0

A

(b) 1

A

(c) –1

A

(d) 13\frac{1}{3}

Explanation

Solution

(a)

A→.B→\overrightarrow{A}.\overrightarrow{B} = AB cos 270ŗ = 0