Look at the attached figure. We define the unit circle as a circle with center
in the origin (0,0) and radius 1.
Then, we consider a point P on the circumference. We call
the angle between the positive half of the x axis and the radius AP.
We define

As you can see, ACD is a right triangle, and so we have

But since we know that AD is the cosine, AC is the sine, and AP is the radius (which is 1, and remains 1 when squared), we have just found out that

Answer:
C
Step-by-step explanation:
Mitochondria is the powerhouse of a cell
The answer to this is ..-2.
Answer:
chtfd ffg it excites shortz Ford Ford
1.150
Step-by-step explanation:
fuffxdfftffft
Answer:22in2
Step-by-step explanation: