Worksheet on identifying opposite, adjacent, and hypotenuse in right triangles for trigonometry.
A worksheet titled "Introduction to Sin, Cos, Tan" with 15 right triangles, each labeled with side lengths and an angle 'a', asking to identify the opposite, adjacent, and hypotenuse. The right side shows the answers for each problem. The worksheet is labeled "Answer Key" and includes a "Math" logo at the bottom.