Geometry, trigonometry, calculus, algebra, ...too many formulas. All of them can become confusing. However, each one of these fields of math has its own basic rules to learn. Soh Cah Toa is an easy memory helper for remembering the three basic trigonometric functions: the sine function, the cosine, and the tangent trig function. Anything that can help students is good for math teachers. This infographic is a must.