Answer:
How do you derive the equation of a circle?
you can reverse the circle formula
How do you identify the center and radius of a circle?
You can identify the center because it is the middle of the circle and the radius can be draw from the center to the round part.
How do you define the radian measure of an angle?
it is the ratio of the length of the arc the angle forms÷the radius of the circle
How are arc length and area of a sector related to proportionality?
sector x radian
area = (r^2 x)/2
arc length = r x
they are not propotional
because Area / arc length = r/2 , (it's not a constant)
High Hopes
Barrii