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Geometry 4 Online
OpenStudy (anonymous):

Given that cos(theta) = -4/5, and the angle theta is in quadrant 2, find the value for sin(theta). I keep getting 3/5 but I'm fairly sure the answer has to be negative since x is negative in quad. 2. -3/5 is not an answer choice.

OpenStudy (kropot72):

Sine is positive in quadrant 2. |dw:1376682135857:dw|

OpenStudy (anonymous):

oh duh. Thank you!

OpenStudy (kropot72):

You're welcome :)

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