Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Lesson 9.3 Evaluate Trigonometric Functions of Any Angle Warm-Up Standard Accessed: Students.

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Presentation transcript:

Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Lesson 9.3 Evaluate Trigonometric Functions of Any Angle Warm-Up Standard Accessed: Students will prove, apply, and model trigonometric functions and ratios.

Warm-Up

Vocabulary

Essential Understandings How can you evaluate trig. functions of any angle?

Evaluate trigonometric functions given a point EXAMPLE 1 SOLUTION 41 The value of r must always be positive. T/F

Use the Unit Circle EXAMPLE 2 SOLUTION

Vocabulary

Find the reference angles EXAMPLE 3 SOLUTION Can a reference angle ever have a negative measure? No, a reference angle is an acute angle.

Vocabulary CT SA

Use reference angles to evaluate functions EXAMPLE 4 SOLUTION Evaluate. What should you do differently when finding the reference angle for an angle measured in radians, rather than degrees?

Solve a real – world problem EXAMPLE 5

Solve a real – world problem (Using Calculator) EXAMPLE 6

Lesson 9.3 Homework: Practice B Practice C “Honors”