Answer: D
Step-by-step explanation:
We're given a point (a,b) that happens to be on the unit circle, a²+b²=1, so a is the cosine of the angle θ and b is its sine.
Answer:

Step-by-step explanation:
Let length of rectangle
Let width of rectangle

When no clocks are produced, n becomes 0. This means that the equation looks like C = 121√0 + 4. Thus, you just do 121 x √4 which is 121 x 2 which is 242.
Answer:180 not sure
Step-by-step explanation: