Question

If a = 2i + 2j - 3k, b = 3i - j + 2k then find the angle between 2a + b and a + 2b.

Answer 1

Explanation:

The given vectors are

a = 2i + 2j - 3k

b = 3i - j + 2k

The question is done by the simple method of Scalar Product of Vectors.

It is also known as Dot Product or Inner Product.

First, we need to find two vectors 2a + b and a + 2b

Then we have to find angle between these two resultant vectors.

I have solved it in detail.

Kindly see the Attachment for detailed answer.

I hope it will help you.