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Trigonometry
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Find the point on the terminal side of θ = -(3pi/4) that has an x coordinate of -1. Show your work for full credit.
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Great question... The best approach is to draw a picture...
|dw:1364161840915:dw|
Alright, so I'm looking for the y-coordinate I assume?
That's positive 3pi/4
You're right... let's make it negative 3pi/4
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|dw:1364162032750:dw|
Since the angle is pi/4 --- or 45 degrees, we have a 45-45-90 right triangle...
|dw:1364162159200:dw|
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