👉 Learn how to evaluate the tangent of an angle in degrees using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, ...

Learn how to use the double angle identities to solve trigonometric equations. When we have equations with a double angle we will apply the identities to create an equation that can help solve by ...

Two computer science graduates at Rochester Institute of Technology are helping to demystify mathematics with a search engine specifically made for sophisticated math. David Stalnaker and Nidhin ...