Appendix A

TABLE OF TRIGONOMETRIC VALUES

Nine pages that answer the question “Why do I need a calculator?”

This table is presented in increments of quarter degrees; each of the other values (including the equivalent radian measure for the angle) is accurate to the thousandths place.

For angles less than 20°, the radian measure of an angle is almost equal to its sine and tangent values. That’s why some people use the radian measure of an angle to approximate small sine and tangent values.