**PURPOSE: **To determine the height of a student using trigonometry.

**DESCRIPTION: **Determine the height *h* of a student by measuring the distance* x* of the student from the protractor and the angle *a* of the top of the student from the floor: *h* = *x* tan *a*. Compare
the experimental value with a direct measurement using the meter stick.

**SUGGESTIONS: **Keep the angle large so that an accurate measurement will be required.

**REFERENCES: ** (PIRA
unavailable.)

**EQUIPMENT: **Two-meter cord, protractor, 2-meter stick, student volunteer.

**SETUP TIME: **5 min.