## EXAM 4 INFORMATION

Exam 4 is scheduled for Tuesday, April 28, at the regular class time in the regular classroom.

Exam 4 will cover all of the material in Chapter 8 from the text. There will not be any questions using the trig table (section 8.10).

This test is worth 150 course points. The letter grade interpretation of the Course points score is the same as that used for Exams 1, 2, and 3.

We will use the same procedures as for previous tests. We will use the same presentation/simplification rules that were used for previous tests, with the additional specific requirements mentioned immediately below:

• You are expected to know the trigonometric values of the common angles studied. You must simplify expression such as "sin(pi)" or "cot(5pi/6)" with their numeric equivalents of "0" and "-sqrt(3)". Expressions that are not multiples of the common angles can be left in trigonometric function form. For example, "cos(7)" can just be left as "cos(7)."
• Each question on the test should be answered in the same units in which the question is phrased. If a question is posed in radians, then angle answers should be given in radians. If a question is posed in degrees, then angle answers should be in degrees.
• Evaluation of inverse trig functions should ALWAYS be done in radians. Do not say that arcsin(1) = 90 degrees.

• Note that almost all of the test will have angles measured in radians. If a student must change all of the radian measure problems to degrees before working them, it is not likely that the student will have time to finish the test. Students should be able to work in radians.

In section 8.8 we encounter many formulas. Click here for an exact copy of the formulas that will be provided for you in your test packet. Notice that the sum formulas sin(u+v) and cos(u+v) are not on the list. You are expected to learn these, as well as the corresponding difference formulas. On the test, there will not be any questions on the Product-to-Sum and Sum-to-Product formulas (text pages 277, 278).