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OpenStudy (anonymous):
evaluate cot -220 degrees
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OpenStudy (luigi0210):
Do you know your unit circle?
OpenStudy (anonymous):
kinda
OpenStudy (luigi0210):
Do you know what type of triangle 220 is? A 30, 60?
OpenStudy (anonymous):
yes
OpenStudy (luigi0210):
Alright, what type of triangle is it?
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OpenStudy (anonymous):
basic right triangle. 30,60,90
OpenStudy (luigi0210):
Yes, but which one specifically? :P
OpenStudy (luigi0210):
If we draw the angle, we can see it is a 30. |dw:1400648181970:dw|
OpenStudy (luigi0210):
Meaning we have to use this one: |dw:1400648295438:dw| Right?
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