Back to Use special triangles and unit circle — Problem 4 · Task Set 68
Exercises: Exact Trigonometric Values from Special Triangles
Use special triangles and unit circle symmetry. Express all answers in exact form (no decimals).
Grade 9·22 problems·~30 min·Common Core Math - HS Functions·group·hsf-tf-a-3
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Fluency Practice
Find the exact value. Show the special triangle you used.
1.
Find the exact value of . Express your answer as a fraction with a rational denominator.