Calculus I Quiz #3 September 16, 2002
Name____________________ R. Hammack Score ______
(1) In this problem, and .
You can simplify the above answer further, but don't forget to FOIL!!
(2) Find the equation of the line that passes through the points and . Please put your final answer in slope-intercept form, and simplify as much as possible.
slope = m = = -3
Using the fact we know the line has slope -3 and passes through the point (3,1), the point-slope formula gives
(b) Find all solutions of the equation . Please support your work with a picture involving the unit circle.
For x to be a solution of this equation, the point x on the unit circle must have a y-coordinate of -1/2. The two such points with radian measure between 0 and 2π are amd
The solutions of the equation are thus , where n is an integer.