Area of Area of sector Area of
Actually, I don't understand this part, becauseTherefore,
What is this?
Have range like this????
As , the denominator is 0, it is undefined.
Let where is measured in radians.
So, what is factor formula???
So 1 is always less than is always less than . As you take the limit as we find that
we may construct the following formulas:
For we may use the top expression with and :