Solving for Side Lengths of Right Triangles

Vocabulary

• cosine: in a right triangle, the ratio of the length of the leg adjacent to an angle to the length of the hypotenuse 

• function: a relation in which each element of the domain is mapped to (paired with) exactly one element of the range

• sine: in a right triangle, the ratio of the length of the leg opposite an angle to the length of the hypotenuse

• tangent: in a right triangle, the ratio of the length of the leg opposite an angle to the length of the leg that is adjacent to the angle