Trig Functions – Part Pythagorean Theorem & Basic Trig Functions Reciprocal Identities & Special Values Practice Problems

Pythagorean Theorem  Used on Right Triangles only  a 2 + b 2 = c 2  Alternate forms: 2

Basic Trig Functions  Uses Right Triangle defined in terms of Adjacent, Opposite and Hypotenuse  Hypotenuse is always the longest side  Opposite and Adjacent are relative to the angle 3

Basic Trig Functions 4

Reciprocal Identities  Each Basic Trig Identity’s inverse is the definition of another identity 5

Special Values Q (radians) Q (degrees) sin Q cos Q tan Q cot Q sec Q csc Q 6

Using This Stuff 7

Using This Stuff (Cont.) 8

Another Example 9

Practice Problems  Page 425 Problems 3-25 odd and