Back to Use special triangles and unit circle — Problem 3 · Task Set 67

HSF.TF.A.3 Tutor Intake — Special Triangles and Exact Trig Values

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Grade 9·11 problems·~13 min·Common Core Math - HS Functions·group·hsf-tf-a-3

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Procedures

Using the symmetry relation $\sin(\pi - x) = \sin(x)$ , what is the
exact value of $\sin\!\left(\frac{5\pi}{6}\right)$ ?

$-\dfrac{1}{2}$

$\dfrac{\sqrt{3}}{2}$

$-\dfrac{\sqrt{3}}{2}$

$\dfrac{1}{2}$