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Mathematics 79 Online
OpenStudy (anonymous):

If the point (5/13, 12/13) corresponds to an angle θ in the unit circle, what is cot θ ?

terenzreignz (terenzreignz):

Actually this question is pretty straightforward, but you have to work with me all the way, ready?

OpenStudy (anonymous):

yes

terenzreignz (terenzreignz):

Draw... |dw:1365640027241:dw|

terenzreignz (terenzreignz):

Now, we have a point (5/13 , 12/13) on the unit circle...|dw:1365640162691:dw|

OpenStudy (anonymous):

okay

terenzreignz (terenzreignz):

Now, the angle ...|dw:1365640305173:dw|

OpenStudy (anonymous):

okay, got it.

terenzreignz (terenzreignz):

So, we have a triangle...|dw:1365640432094:dw|

OpenStudy (anonymous):

Alright, got it.

OpenStudy (anonymous):

Did you leave?

terenzreignz (terenzreignz):

computer just shut down. Oh well.

terenzreignz (terenzreignz):

What are the dimensions of these sides of your triangle :|dw:1365640891739:dw|

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