Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric...
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Transcript of Section 7.5 Trigonometric Equations Objective: To solve linear and quadratic trigonometric...
Section 7.5Trigonometric 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
Ex 1. Find all solutions to : 2sin 1 0x
Ex 2. Find all solutions to 2cos 2cos 1 0x x
Class Work
Find all solutions to the following:
1.
2.
sin 1 0x
2 cos 1 0x
Ex 3. Find all solutions to: 1 tan 0x
Ex 4. Find all solutions to: 3 tan 1 0x
Class Work
Find all solutions to the following:3.
4.
2tan 3 0x
21 tan 0x
Ex 5. Find all solutions to 2sec 2 0x
Ex 6 Find all solutions to sec 2cos 2 0x x
Class Work
Find all solutions to the following:
5.
6.
2csc 4x
2cos 3 2sin 1 0x x
HW p568 1-21 odd