Answer:
The answers are: a, c, d, e
Step-by-step explanation:
I hope this helps
If you have a Scientific calculator you can type this in
You can use the trigonometric identity

.

The requirement that

eliminates -1/6 from being another solution.
Answer:
no
Step-by-step explanation:
no. substitute -1 for x and -2 for y.
the first one is -1 - 10
this equals -11 not 3