Question

Refer to the figure below (attached) and mark all statements that are true.

I think that the answers are C. and D. because:

A. false when arc length is r theta is 1 radian which is 57.29........degrees
B. false r is fixed arc length can change
C. true
D. true

Please help and explain. Are these answers right? Thank you!

Answer 1

That's the answers I would come up with. \[\theta( rad)=\frac{ s }{ r }\]If s=r then r divided by r is 1 radian.