MAC1114  Siegel
Practice Test #3
Directions:
After you have reviewed all the material for this test (see Test #3 Review Sheet on
the course website), put all notes away and give yourself 1 hour and 15 minutes to complete this
test. Show all work as you would on a real test. Then, check your work against the solutions
provided on the course website to see how you did. If this is not enough practice, make a similar
practice test using problems from homework.
Note: Studying just this practice test is not
sufficient preparation for the test. You should review all notes and homework problems.
1)
If
13
12
cos
and
is an angle in Quadrant III, do the following:
a)
Draw an appropriate triangle in the correct quadrant.
b)
Find the exact value (no decimals) of
2
sin
2
cos
by using the appropriate
doubleangle formulas. Simplify completely.
c)
Find
2
tan
.
2)
Use an appropriate halfangle identity to find the exact value (no decimals) of
)
75
sin(
.
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 Spring '11
 Staff
 Calculus, Rey Mysterio, Jr., exact value

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