Slide 2 Review: Special Right Triangles 30 o 60 o 45 o Slide 3
13-2 Angles & the Unit Circle Day 1 Todays Objective: I can
work with angles in standard position. Slide 4 Angle on coordinate
plane in standard position: 1.Vertex on origin 2.One ray of angle
is on positive x-axis Terminal side Initial side + The blue arrow
is fixed to the x-axis. Turn the red arrow counterclockwise about
the origin. If the red arrow contains one of the points when it
stops, which point would create the angle with the greatest
measure? Explain your reasoning (0, 1), (2, 2), (-3, 3), (-1, 0),
or (5, 5) Slide 5 What are the measures of each angle? Sketch each
angle in standard position Slide 6 Coterminal angles angles that
have the same terminal side Slide 7 Review: Special Right Triangles
30 o 60 o 45 o p. 835:1-7 odds p. 840:7-25 odds, 64-66 Slide 8
Angles & the Unit Circle Day 2 Todays Objective: I can find the
coordinates of points on the unit circle. Slide 9 x y (1, 0) (0, 1)
(-1, 0) (0, -1) 1 SOH CAH TOA Unit Circle: Radius = 1 Always draw a
right triangle with one leg on x-axis Slide 10 Special Right
Triangles 30 o 60 o 45 o Slide 11 x y (1, 0) (0, 1) (-1, 0) (0, -1)
Angle: 30 o 1 30 o x y (1, 0) (0, 1) (-1, 0) (0, -1) Draw a right
triangle with one leg on x-axis Angle: 60 o 1 60 o Slide 12 x y (1,
0) (0, 1) (-1, 0) (0, -1) Angle: 120 o 1 120 o x y (1, 0) (0, 1)
(-1, 0) (0, -1) Draw a right triangle with one leg on x-axis Angle:
45 o 1 45 o Slide 13 x y (1, 0) (0, 1) (-1, 0) (0, -1) Points on
the axis Complete Unit Circle Slide 14 Find the exact value of
trigonometric function. x y (1, 0) (0, 1) (-1, 0) (0, -1) Complete
Unit Circle WS Angles & the Unit Circle
