Answer:
-1
Step-by-step explanation:
We evaluate 
In
,
is a complete revolution and is the same as 0. So we have

One
is a half revolution, putting the point at (-1, 0).
is a quarter of a revolution. A quarter circle from (-1, 0) anticlockwise is (0, -1).
The sine is the y-coordinate of a point along a unit circle.
Hence,
Answer:
Hi
Step-by-step explanation:
I don't know bec we didn't learn this.. So.. Sorry
Answer: I guess B
Step-by-step explanation:
The answer is either a or c, depending on the tax percentage. tax is added to the price tag price