Download Objectives: 1) Define sine, cosine, and tangent for all real numbers 2

Math 3 A Block 2.26.15
February 26, 2015
Objectives:
1) Define sine, cosine, and tangent for all
real numbers
2) Use reference angles to find the values of
sine, cosine, and tangent for additional
angles
Yesterday, we defined sine, cosine, and tangent for angles
between 0 and 360 degrees. Today we will extend the definition
to include all angles.
Math 3 A Block 2.26.15
February 26, 2015
Math 3 A Block 2.26.15
A reference angle is the smallest angle the terminal side makes with the x-axis. A
trigonometric ratio of any angle is either the same as that of its reference angle or -1 times that
of its reference angle.
Find the reference angles for the following angles:
February 26, 2015