Finding Coterminal Angles

Violagirl

Junior Member
Joined
Mar 9, 2008
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Hi everyone, I'm having trouble finding coterminal angles when it comes to radians. Here's an example:

33pi/4. I have to use a coterminal angle to find the exact value of a Trig Function. My teacher likes my class to sketch it out to find the angle you'd want to use. My book says that pi/4 would be the coterminal angle found and then you would refer to the 45-45-90 degree triangle to find the value. I'm really confused on how you'd sketch that out or find pi/4 for as the angle. Any help is great!! :D
 
One complete rotation is 2?. In terms of fourths, one complete rotation is 8?/4. How many rotations to work up to the whole rotation less than 33?/4. What is left over?
 
Oh okay! So it'd be 4 rotations to get up to 32?/4 so then there'd be ?/4 leftover then. Thanks!!
 
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