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8‐3: Right Triangle Trigonometry When using trigonometry to find the sides and angles of a right triangle, we call the three sides of the triangle the hypotenuse, opposite and adjacent sides. The hypotenuse will NEVER change. When looking at an angle, the two sides that make up the angle are the adjacent and hypotenuse. The other side is called the opposite (across from). adajacent hypotenuse B opposite B d f C opposite adajacent hypotenuse C A e A trigonometric ratio is a ratio of the lengths of the sides in a right triangle. (SOHCAHTOA) B 3 A 5 4 C Sin B= Sin C= Cos B= Cos C= Tan B= Tan C= Use your trig ratios to find missing side lengths. Round your answers to the nearest tenth. Find the measure of the missing variable. Round to the nearest degree. 10 6 x 20 x 15 11 x 33