The answer is b because you have to count the squares
It's a degree, however in algebra there are also radians and gradians
Answer:



Step-by-step explanation:
Let 




We have the relation






Answer:
The relation
is explained below.
Step-by-step explanation:
P(x, y) is a point on the circle. Q is the origin. Join PQ.
PQ is the radius.
Therefore, PQ = r
Draw PS perpendicular to the x-axis.
Now, ΔPQS is a right triangle.
By Pythagoros theorem,


