The 6 Trigonometric Functions

sine, cosine, tangent,

cosecant, secant, and cotangent

opp

adj

hyp

ϴ

Ex. 1) Find the 6 trig functions for the triangle.

7

4ϴ

Ex. 2) Find the missing sides and angles.

42o

12

Ex. 3) Find the missing sides and angles.

18o

7

Ex. 4) Solve for x.

58

xo

Ex. 5) Solve for x.

7

14x

o

Cofunction Properties:Notice:

Two angles that are complementary add to 90o.

The cofunctions work like this:

Other Important Identities

Ex. 6) Given the information below, find the following.

Ex. 7) Given the information below, find the following.

Ex. 8) Use trigonometric identities to transform the left side of the equation into the right side.

Assignment:

4.3 p. 308 #1, 5, 9, 10, 18-26 (even), 29, 30, 33-41 (odd), 45, 48, 54-58 (even)