please solve RD sharma class 12 chapter 23 Scalar or dot product exercise Fill in the blanks question 4 maths textbook solution
Hint:
Angle between and
.
Given:
The non-zero vector are related by
and
then angle between
and
is
Solution:
We have,
and
Let,
Then,
And
Consider angle between and
is
.
Now, we know the rule of dot product.
Therefore,
Hence, angle between and
is
.