Trig Functions and Notation

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Presentation transcript:

Trig Functions and Notation Trigonometry Trig Functions and Notation

YESTERDAY What is Trigonometry all about? RIGHT ANGLE TRIANGLES BASIC TRIG RATIOS (SOHCAHTOA) ROTATION! UNIT CIRCLES

Exact Values Unit Circle (0, 90, 180, 270, 360, etc.) Special Triangles (30, 45, 60)

Related Angles (CAST) Now we know a LOT of exact values: 0, 90, 180, 270, 360, etc. (plus the equivalent negative rotations) 30, 150, 210, 330, etc. 60, 120, 240, 280, etc. 45, 135, 225, 315, etc.

Question Related Angle Quadrants Angle One Angle Two Sin A = 0.455

Coterminal Angles Angles that share the same terminal arm with a different rotation are coterminal angles y x

Examples 150 -400 2185 Angle Next smallest positive Next smallest negative 150 -400 2185

Radians next…

Work today Complete work from yesterday Pg. 200 #1-4, 6-8, 11-13 Handout (Quiz)