degrees vs radians

[Zues]

hey guys, i have a methods unit 2 exam 2 calc exam coming up soon and circular functions is on it along with diff, probability etc.

how do i know when to leave it on degrees or when to leave it on radians?

e.g. finding the angle is degrees but long circular function application questions is radians. can someone help me out?

thanks

[IndefatigableLover]

Keep everything in radians for Methods and if you want it in degrees then just use the degree symbol on your CAS.
Alternatively you could just flip back and forth from radians to degrees using the right conversion but really in Methods you'd just leave it on radians.

If you're looking to find the angle of something then again just input it in using the degree symbol on your CAS instead of changing the mode of it to degrees (for Spesh I'd leave it in degrees though).

[StupidProdigy]

hey guys, i have a methods unit 2 exam 2 calc exam coming up soon and circular functions is on it along with diff, probability etc.

how do i know when to leave it on degrees or when to leave it on radians?

e.g. finding the angle is degrees but long circular function application questions is radians. can someone help me out?

thanks

Generally the question should specify it by stating find the solutions to something like cos 1/2 over the domain pi to 3 pi (which obviously suggests radians are what you want). So if it wanted it in degrees just look for the end of the question that should state (eg.) over the domain 0 to 360 degrees

edit: but as indefatigablelover said, it should generally be radians, especially with aroc's and that

[Zues]

ok so in a cos graph question for example, application Q -  to be specific, radians is the key?

[IndefatigableLover]

ok so in a cos graph question for example, application Q -  to be specific, radians is the key?

In short: Yeah for an application question involving a cos graph (so say maybe a a Ferris wheel or waves with axes of time and height), they'd want answers to be in radians since more or less your period will simplify out to be a regular number which will be easier to work with in radians.

[Zues]

i dont get why they work with radians in general, whats so special vs normal numbers lol?

[keltingmeith]

i dont get why they work with radians in general, whats so special vs normal numbers lol?

Because radians work like normal numbers, degrees don't. If anything, using degrees makes no sense - the only reason you think otherwise is because you've been raised on degrees.