1) In this problem, I made the mistake of saying that the radius of the circle was 100 rather than 10. I forgot that the equation of a circle is x^2+y^2=r^2. Knowing this, the radius would be the square root of 100, or 10.
7) In this problem, I lost all of my points for not paying attention to negatives. The point was in the second quadrant, therefore everything except for the sine should be negative. I made them all positive.
9) e. I did not simplify -2(squareroot2)/2 to -(squareroot2) by cancelling the 2's.
g. 5pi/6 is in the second quadrant, therefore the sine should be positive, but I wrote -1/2.
After memorizing the unit circle, this unit was not too bad. It is easy to make silly mistakes, however.
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