I am having trouble finding reference angles with radians. For instance: #1) 33pi/4 #2) -23pi/6 How do I go about solving these?
Last edited by davecolombia; Apr 13th 2013 at 06:14 PM.
Follow Math Help Forum on Facebook and Google+
Originally Posted by davecolombia I am having trouble finding reference angles with radians. For instance: 33pi/4 -23pi/6 How do I go about solving these? Please do not be insulted by this remark: often it is a problem in basic arithmetic. . Now we can disregard all even multiples of . Thus in this case we endup with . What is the reference angle there?
I apologize, I have written them wrong...they are separate questions: #1. 33pi/4 #2. -23pi/6
Last edited by davecolombia; Apr 13th 2013 at 07:10 PM. Reason: delete
Originally Posted by davecolombia I apologize, I have written them wrong...they are separate questions: #1. 33pi/4 #2. -23pi/6 The fact that your post is mistaken makes no difference. We can disregard any multiple of Here is an example. . So disregard the and get the equivalent number of . Now what is the reference angle angle?
4pi/5 ?
How did you get that?
pi-pi/5=4pi/5
whoaa, wait..it is pi/5 which is 36 degrees ... right ?
5pi/12, which is 75 degrees
Originally Posted by davecolombia 5pi/12, which is 75 degrees Here are the rules for reference angles. First reduce to The the reference angle is where If then If then If then If then .
View Tag Cloud