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Lesson 4.4 Trig Functions of Any Angle

Lesson 4.4 Trig Functions of Any Angle. Reference Angle The smallest angle formed by the terminal side of an angle and the x-axis. Angle, θ. Reference angle, θ ′. Angle, θ. Reference angle, θ ′. or. Example 1 Evaluate without a calculator.

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Lesson 4.4 Trig Functions of Any Angle

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  1. Lesson 4.4Trig Functions of Any Angle

  2. Reference Angle The smallest angle formed by the terminal side of an angle and the x-axis Angle, θ Reference angle, θ′ Angle, θ Reference angle, θ′ or

  3. Example 1 Evaluate without a calculator

  4. Example 2 Use identities to find the value given a different value ; find in quadrant II

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