Circle-ometry& X2014;on Circular Motion

How can you figure out the "height"of the sun in the sky without being able to measure it directly with a ruler? Follow ... (more)

How can you figure out the "height"of the sun in the sky without being able to measure it directly with a ruler? Follow the path of ancient Indian scholars to answer this question using "angle of elevation"and a branch of geometry called trigonometry. You learn the basic trig identities (sine, cosine, and tangent) and how physicists use them to describe circular motion. (less)