How to derive two more cosine double-angle formulas.
How to evaluate expressions like tan(sin (4/5))^(-1).
How to use the unit circle to derive identities that are useful in graphing the reciprocal trigonometric functions.
How to calculate the area of any triangle using two sides and an included angle.
How to graph y = tan(theta) for 0 <= theta < pi/2.
How to solve a sine equation by factoring: 4 [sin(theta)]^2 = 2.
How to solve a simple sine equation: sin (theta) = 1/2.
How to define the tangent function for all angles.
How to define the reciprocal trigonometric functions, the reciprocal identities, and the Pythagorean identities.
How to use inverse trig functions to find angles in right triangles.
How to simplify a trigonometric expression by converting to sines and cosines and using algebra.
How to graph y = tan(q) for one or more periods.
How to find the x-intercepts and vertical asymptotes of the graph of y = tan(q).
How graph the cotangent function using five key points.
How to define the tangent ratio and identify the tangent of an angle in a right triangle.
How graph the secant function using five key points.