Answer:
It is 105 degrees. Since 105-15=90 degrees.
Answer:

Step-by-step explanation:
The given expresion is

We want to evaluate this expression when x=3i
We substitute to obtain:

We simplify to get

Recall that

This implies that:



Answer:
D
Step-by-step explanation:
Since there is a y on both and only an x on one the only logical one would be D
Answer:
1/8
Step-by-step explanation:
simplify
4^(-3/2)
= 1/4^(3/2)
= 1/[(2²)^(½)]³
= 1/[2]³
= 1/8