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Study Guide – Trig Basics Quiz Topics you should know: Types of angles – acute, obtuse, right Conventions (rules) for naming angles Adjacent angles Complementary and supplementary angles Measuring angles and drawing angles with a protractor Triangle Angle Sum Property Determining if a set of three numbers could be the lengths of the sides of a right triangle (Pythagorean triple) Identifying the hypotenuse, the opposite side, and the adjacent side with regard to a reference angle Using the Pythagorean Theorem to find the missing length of a side of a right triangle Finding the sine, cosine, or tangent of an angle of a triangle – as a ratio and then calculating the decimal opposite sin A hypotenuse adjacent cos A SOH CAH TOA hypotenuse opposite tan A adjacent Using the Trig Table to find the value of the sine, cosine or tangent of an angle OR to find the measure of an angle if you know the value of the sine, cosine, or tangent