PRECALCULUS I INTRODUCTION TO TRIGONOMETRY
oangle: the union of 2 rays with a common endpoint called the vertex.
oConsider angles drawn on the coordinate plane with the origin as the vertex.
oThe rst ray, which lies along the positi
Graphing Trig Functions Packet
Sine and Cosine
General Form: y = a sin (bx - c) +d
1. d represents the midline which is a horizontal line that splits the graph in half.
*the midline is often referred to as the vertical displacement or VD.
SOLVING OBLIQUE TRIANGLES AND FINDING AREA PACKET
5.5 Law of Sines DAY 1
Look for an angle-side pair
When 2 angles are missing, find the smaller angle first.
p. 484; #s 3-12 (3n), 38, 40, 42, 43
5.6 Law of Cosines DAY 2
Use for SAS or SSS cases
Worksheet: Sum and Difference Identities
osin(a ib) = sinacosb isinbcosa
ocos(a ib) = cosacosb-Fsinasinb
otan aib =
( ) litanatanb
Example 1: Find the exact value of cos 15°. 1. 4
Example 2: Find the exact value of sin $22. 2
Algebra 2/Trig Honors
Review for Final Exam June 2012
For questions 57-61, match each angle named with its reference angle.
Choose here for reference angle