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Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric Functions Objective: Given an angle or ordered pair students will be able to find & evaluate all six trigonometric functions. Section 4.4 Study Problems Page 320 # 1, 5, 19, 3138, 7983 odd, 97 Think Pair Share 1. 2.

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Page 1: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

Evaluate Trigonometric Functions

Objective:Given an angle or ordered pair students will be able to find & evaluate all six trigonometric functions.

Section 4.4

Study Problems

Page 320 # 1, 5, 19, 31­38, 79­83 odd, 97

Think Pair Share1.

2.

Page 2: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

What are the trig functions if the circle does not have a radius of 1?

Trig Functions at any Angle

Page 3: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

Think Pair Share

Let (­4, 3) be a point on the terminal side of an angle 0 in standard position. Evaluate the six trig function at the angle 0.

Example

Page 4: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

Let cos 0 = 3/5  where 0 is an acute angle. Find the other trig function using the trig identities.

Example

Think pair share

Page 5: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

Page 6: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

Derive the Pythagorean Identities using the unit circle and  Pythagorean Theorem

Page 7: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

Let 0 be an angle is Quadrant II such that sin 0 = 1/3. Find 

a) Cos 0  and 

b) Tan 0 

by using trig identities.

Example

The terminal side of 0 lies on y=x/3 in quadrant III. Find the value of the six trig function.

Example

Page 8: Evaluate Trigonometric Functions Objectivemoremathmoremoney.weebly.com/uploads/3/0/7/1/...Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017 Evaluate Trigonometric

Section 4.4 Part 5 Trig Func for any angle.notebook December 11, 2017

Find two solutions of the equation where 

a)

b) 

Example