Math  /  Trigonometry

QuestionFind the exact value of cos(π3)\cos \left(-\frac{\pi}{3}\right) using reference angles.

Studdy Solution
The exact value of cosine of pi/3 is known from the unit circle or the special right triangles.cos(π3)=12\cos \left(\frac{\pi}{3}\right) = \frac{1}{2} So, the exact value of the given expression is1/2.

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