Radians

Question 1

What is a radian?

Answer 1

A measure of a segment of a circle based on radius (part of the “inside of the doughnut”)

Question 2

What is the equation for the circumference of a circle based on radians?

Answer 2

2 x π x no. of radians

Question 3

What is the equation for the no. of radians in a circle?

Answer 3

radians = (π / 180) x degrees

Question 4

What is the equation for the area of a sector (using radians)?

Answer 4

A = 1/2 x r^2 x θ

Question 5

What is the equation for arc length in relation to radians?

Answer 5

S = r x θ (in radians)