Using right angle trigonometry, students will use a clinometer to determine heights of various items. Students will require a tape measure and a hand-made clinometer (instructions included). Students can make their own clinometer from a straw, string, weight such as a nut or washer, and protractor which may either be plastic or a paper photocopy.
Students measure the height of a soccer net using their clinometer and determine percent error based on its actual height (usually 8 ft). They then determine the height of the flap pole and the school. These items could, of course, be changed to suit your environment.
Answer are included in a separate file on Math Matters MM. Please also download these answers, and check out our other files often on applications for high school math subjects.
Students must be able to use the primary trigonometry ratios (in this case the tan ratio) to determine lengths based on a given angle and length.