13.1 Assignment C – even answers 18. sin = 4/1334. B = 53 o cos = a = tan = b = cot = sec = 38. A = 34 o csc = 13/4 b = c = 12.16

13.1 Quiz B Solve the right triangle using the given information. Give answers in simplest radical form if necessary.

13.2 General Angles and Radian Measure Notes A In Lesson 13.1 you worked only with acute angles (angles measuring between 0 o and 90 o ). In this lesson you will study angles whose measures can be any real number. An angle is formed by _____ _____ that have a common endpoint called the ___________.

Initial side: Terminal side: Standard position: Measure of an angle:

Example 1: Drawing Angles in Standard Position Draw an angle with the given measure in standard position and tell in which quadrant the terminal side lies. (a) 210 o b) -45 o c) 510 o

Coterminal angles: Example 2: Finding Coterminal Angles Find one positive and one negative angle that are coterminal with the given angles. a) -60 o b) 495 o

13.1 Assignment D: pg. 773 #36,40,42,46,48,49

So far, all the angles you have worked with have been measured in degrees. You can also measure angles in radians. Radian:

Degrees = Radians= Example 3: Converting Between Degrees and Radians a)Convert 110 o b) Convert to radians to degrees

13.2 Assignment A: pg. 780 #5-20 all