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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.
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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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