Hi
I need help on the following questions:
1)Given and , find the angle between b and c.
This is what i have done:
=60'58'
answers says its 114'50'
2)Given and find the value of t if the angle between the two vectors is 60 degree
P.S
For the second problem, just start by writing what you know. The main equation you will need is:
The dot product is
So now the main equation becomes:
You need the absolute values:
Substituting into the main equation results in:
Square both sides to obtain: