In this Trigonometry Review lesson, Professor Perez teaches us how to express the height of a pendulum as a function of the angle theta. By drawing a right triangle with the hypotenuse length of L, he uses the cosine function to relate the adjacent leg to the hypotenuse. After simplification, he factors out L to give us the equation h equals L times 1 subtract cosine theta. By the end of the lesson, we have learned how to express the height of the pendulum in terms of the angle theta.
Trigonometry review problem involving the height of a pendulum
Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.