Answer:
the values of it is the first one. meaning: f(-2)
Answer:
The answer is E x<y
Step-by-step explanation:
-2 is less then 8
Answer:
(-31,15)
Step-by-step explanation:
Rotating 90 degrees clockwise is very simple:
(a,b) 90 degrees= (-b,a)
Very simple.
Just switch sides and add negative to the first term.
Cosine is

which applies to a right triangle. I hope that helps you.