You don’t need to memorize $1^2 + \cot^2 = \csc^2$, except for silly tests that mistake trivia for understanding. In that case, take a minute to draw the dome/wall/ceiling diagram, fill in the labels (a tan ge
of a function on a TI-89 calculator? Trigonometric Functions:There are six trigonometric functions. These functions are sine, cosine, tangent, cosecant, secant, and cotangent. Of these, only the first three have assigned buttons on most scientific or graphing calculators. To use the latter ...