Question

If the angle between the vectors A and B is ∅.
The value of the product (B vector *
A vector) A is equal
to:​

Answer 1

Answer:

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Explanation:

Hello dear,

● Answer -

(a×b).a = 0

● Explaination -

Consider θ be the angle between vector a & vector b.

Let's find out (a×b).a

(a×b).a = (a.a)×(b.a)

(a×b).a = (0)×(b.a)

(a×b).a = 0

Therefore, value of (a×b).a is 0.

# Important concepts used here -

1) Dot product of vector with itself is zero.

a.a = 0

2) Cross product of any vector with zero vector becomes zero.

0×r = 0

Hope this helps you clear concepts.

Thanks for the question.