Create your list
Browse from thousands of movies and shows.
We send out your disc the next business day.
Watch and repeat
Free returns, plus no due dates or late fees.
In this user-friendly course, veteran geometry instructor Jim Noggle teaches the fundamentals of right-triangle trigonometry, including how to define and apply the tangent, sine and cosine ratios for acute angles. Noggle also explains how to use tangent, sine and cosine ratios to solve problems involving right triangles. Noggle is an award-winning instructor who's been teaching math since 1970.