Me Gusta Math Analysis

First of all an identity is a proven fact that is always true. The Pythagorean Theorem when using x,y and r, it's x^2+y^2=r^2. Then di...

Please see my WPP13-14, made in collaboration with Jorge Barroso, by visiting his blog  http://jorgebperiod1.blogspot.com/2014/03/wpp-13-14-...

3. Law of Cosines Why do we need it? How is it derived from what we already know? We need law of cosines to find the third side when kno...

A. Juanito at ground level measures the angle of elevation to the top of the cliff is 44 degrees. If he is 7 feet away from the cliff, what ...

For the 30-60-30 triangle label all the sides by 1. Divide the triangle in two. That will divide the 60 degrees in to 30 degrees, the adjace...

  http://britton.disted.camosun.bc.ca/jbconics.htm   "An ellipse is the set of points for which the sum of the distances from the fo...

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