Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric...

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Section 7.5 Trigonometric Equations Objective: •To solve linear and quadratic trigonometric equations.

Transcript of Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric...

Page 1: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Section 7.5Trigonometric Equations

Objective:•To solve linear and quadratic trigonometric equations.

Page 2: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

A trigonometric equation is an equation that contains a trigonometric function. For example:

To solve a trig equation, we use algebra to isolate the trig function on one side of the = sign.

2 2sin cos 1x x 2sin 1 0x 2tan 1 0x

Page 3: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Ex 1. Find all solutions to : 2sin 1 0x

Page 4: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Ex 2. Find all solutions to 2cos 2cos 1 0x x

Page 5: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Class Work

Find all solutions to the following:

1.

2.

sin 1 0x

2 cos 1 0x

Page 6: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Ex 3. Find all solutions to: 1 tan 0x

Page 7: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Ex 4. Find all solutions to: 3 tan 1 0x

Page 8: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Class Work

Find all solutions to the following:3.

4.

2tan 3 0x

21 tan 0x

Page 9: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Ex 5. Find all solutions to 2sec 2 0x

Page 10: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Ex 6 Find all solutions to sec 2cos 2 0x x

Page 11: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

Class Work

Find all solutions to the following:

5.

6.

2csc 4x

2cos 3 2sin 1 0x x

Page 12: Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric equations.

HW p568 1-21 odd