As usual, when faced with a new formula, it is a good idea to try it on familiar objects to be sure it gives results consistent with past experience. Use the length formula in Equation (3) to calculate the circumferences of the following circles (a > 0).

a. r = a 

b. r = a cos θ 

c. r = a sin θ

Transcribed Image Text:

B 2 = [²√² + (+)²₂ do. de a L= (3)