MATH 128 Plane Trigonometry

Math 128 (Trigonometry) Old number Math 4 This course is not Math 150 (old number 128) Scientific calculator needed, graphing OK (TI 83 PLUS is a good choice) Attendance required - 7.5% of grade Homework quizzes required - 10% of grade

Instructor Info Rick Hopkins Office: Armstrong 305E Office Hours : MWF 2:30-3:20, By Appt Web Sites: – –jacobi.math.wvu.edu/~mays/128s04/128.htm

Classroom Etiquette Fill in seats from the front of the class. Leave the seats at the rear of the classroom vacant. Avoid classroom disruptions such as chatter, ringing cell phones, radios, late arrival, early departure, etc. NOTE: It is extremely rude to leave class during lecture. If you have a situation that requires an early departure, discuss it with me before class begins. Students that depart from class during lecture without instructor consent will be counted absent.

Classroom Etiquette 2 Bring materials (pencil, paper, etc.) to record lecture notes. Do not read newspapers, work on assignments from other classes or sleep during this class. Our class time is used exclusively for our class. Class lasts 50 minutes or until you are dismissed. Do not disrupt lecture by prematurely preparing to depart before class has ended. Breaches of classroom etiquette are considered disruptive to the operation of the course.

Grading 4 WebCT 100 points (taken in ARM) 10 Labs in points points 10 WebCT Homework 8 points (accessible anywhere, unlimited tries) Comprehensive final May 160 points

Sections 1.1 & 1.2

x y Quadrant I x > 0, y > 0 Quadrant IV x > 0, y < 0 Quadrant III x < 0, y < 0 Quadrant II x 0

x y d

Midpoint Formula To find the midpoint M of a line segment from points (x1, y1) to (x2, y2), use the formula

x-intercepts y-intercept x y

Remember X-intercept coordinates have the form (x, 0) Y-intercept coordinates have the form (0, y)