In your study of function, the usual activity you do is to graph the function given an equation. Here is a problem that involve finding the equation given the graphs of functions – linear, quadratic, exponential, and reciprocal (rational) functions. Problem The figure below shows the graphs of common functions. The algebraic representation of the
In trigonometry, the Cosine Rule (also known as Law of Cosine) relates the lengths of the sides of a triangle to the cosine of one of its angles. The following are three versions of the Cosine Formula. The easiest of course to remember is the last one since it looks like the Pythagorean Formula. The
Problem 1 The figure below shows circle A and rectangle ABCD. The measures of segments are indicated. How long is EB? This problem is not that hard. All you need to see is that AB and AE are radius of Circle A. Also, because ABCD is a rectangle, BD = AC. Now, all you need