2. Trigonometric Functions on Right Triangles
Trigonometric Functions on Right Triangles
2:32 minutesProblem 69a
Textbook Question
Textbook QuestionIn Exercises 69–70, express the exact value of each function as a single fraction. Do not use a calculator. If f(θ) = 2 cos θ - cos 2θ, find f(𝜋/6).
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