Answer:
Some of the graph's coordinates are:
(-2, 1/2)
(-1, 1)
(0, 2)
(1, 4)
Step-by-step explanation:
This creates a cone! :) the formula for volume of it is 1/3 pi R^2 (h) just in case!
Answer:
−7
Step-by-step explanation:
The angle sum identity for cosine says that

because

and

.