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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