Trigonometry Fundamentals Quiz

Question 1

Using the unit circle, what is $\sin\left(\frac{\pi}{6}\right)$?

Accepted Answer

$\frac{1}{2}$

Answer

$-\frac{1}{2}$

Answer

$\frac{\sqrt{2}}{2}$

Answer

$\frac{\sqrt{3}}{2}$

Question 2

Given $\sin	heta=\frac{5}{13}$ and $	heta$ is in Quadrant II, what is $\cos	heta$?

Accepted Answer

$-\frac{12}{13}$

Answer

$\frac{12}{13}$

Answer

$\frac{\sqrt{144}}{169}$

Answer

$-\frac{13}{12}$

Question 3

Evaluate $\arctan(\sqrt{3})$ giving the principal value in radians.

Accepted Answer

$\frac{\pi}{3}$

Answer

$\sqrt{3}$

Answer

$\frac{\pi}{6}$

Answer

$\frac{2\pi}{3}$

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