Exact Trig Values Flashcards

All 8 cards in this deck

What are the exact values of $\sin 30^\circ$, $\cos 30^\circ$ and $\tan 30^\circ$?

$\sin 30^\circ = \frac{1}{2}$, $\cos 30^\circ = \frac{\sqrt{3}}{2}$, $\tan 30^\circ = \frac{1}{\sqrt{3}}$

What are the exact values of $\sin 45^\circ$, $\cos 45^\circ$ and $\tan 45^\circ$?

$\sin 45^\circ = \cos 45^\circ = \frac{1}{\sqrt{2}} = \frac{\sqrt{2}}{2}$, $\tan 45^\circ = 1$

What are the exact values of $\sin 60^\circ$, $\cos 60^\circ$ and $\tan 60^\circ$?

$\sin 60^\circ = \frac{\sqrt{3}}{2}$, $\cos 60^\circ = \frac{1}{2}$, $\tan 60^\circ = \sqrt{3}$

What are the exact values of $\sin 0^\circ$, $\cos 0^\circ$ and $\tan 0^\circ$?

$\sin 0^\circ = 0$, $\cos 0^\circ = 1$, $\tan 0^\circ = 0$

What are the exact values of $\sin 90^\circ$ and $\cos 90^\circ$?

$\sin 90^\circ = 1$, $\cos 90^\circ = 0$

True or false? $\sin 30^\circ = \cos 60^\circ$.

True. Both are exactly $\frac{1}{2}$.

What is the exact value of $\tan 45^\circ$?

$1$

In a right-angled triangle with a $45^\circ$ angle the opposite and adjacent sides are equal.

True or false? $\cos 0^\circ = 0$.

False.

$\cos 0^\circ = 1$; it is $\sin 0^\circ$ that equals $0$.