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# Right Triangle * One of its angles is a 90 degree angle or right angle * The two other angles are acute and complementary A right triangle labelled with points A, B, and C has the following properties: * **Vertices**: A, B, C * **Angles**: $\alpha$, $\beta$, $\delta$ * **Sides**: a, b, c # Tr...

# Right Triangle * One of its angles is a 90 degree angle or right angle * The two other angles are acute and complementary A right triangle labelled with points A, B, and C has the following properties: * **Vertices**: A, B, C * **Angles**: $\alpha$, $\beta$, $\delta$ * **Sides**: a, b, c # Trigonometric Functions * $sin \theta = \frac{opp}{hyp}$ * $cos \theta = \frac{adj}{hyp}$ * $tan \theta = \frac{opp}{adj}$