need to know how to convert radians to degrees ? + unit circle ?

D

dentalstudent2021

do we have to know how to convert radians to degrees and vice versa ?

also, should we know the unit circle, atleast the 1st quadrant ?
 
May 17, 2014
194
59
Status
Pre-Dental
From what I have seen here yes. It's pretty simple though. To convert from radians to degrees you just change π to 180°. For example π/4 = 180/4 = 45°
 
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byahnoob

5+ Year Member
Dec 17, 2014
303
169
LA, CA
You need to know the unit circle. Its crucial.
If you know the unit circle, you know how to convert from radians to degrees and vice-versa.
 

510586

5+ Year Member
Dec 24, 2014
1,050
263
Status
Dental Student
Doesn't take long to manually do it if you don't wanna memorize all the values. The timing on qr is more like if you can see a prob and know how to do it. I feel like the benefits of shaving a second or 2 by not using calculator or by memorizing all 16 values of the unit circle are marginal at best.
 
Jun 11, 2014
164
155
Status
Pre-Dental
do we have to know how to convert radians to degrees and vice versa ?

also, should we know the unit circle, atleast the 1st quadrant ?
You should definitely google the "Unit circle left hand trick". I learned it in high school and it makes the unit circle trivial. As long as you can recognize when sin, cos and tan are positive or negative.
 
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