# Euclid's Muse

## your source for INTERACTIVE math apps

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# NWMC 2013

Apps for presentation entitled "Creating electronic handouts and assessments as browser, tablet or smartphone apps"

Tags: talk, NWMC

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#### Collection Contents:

##### Cosine Rule
Set values for side lengths AB and BC and for angle ABC. Can you compute the length of side AC?

Tags: cosine-rule

##### Cosine Rule
AB, BC and angle ABC are assigned random values. You have the opportunity to calculate AC

Tags: cosine-rule, trigonometry

##### Function Composition
The purple function is f(x), the blue function is g(x) and the red function is f(g(x)). Can you define f(x) so that f(g(x)) = h(x), at least over a restricted domain?

Tags: function-composition

##### Pipeline Problem
A famous problem:  given locations A and B and a line, to find the location C on the line which minimizes |AC|+|CB|.  (This can be phrased as locating a pumping station on an oil pipeline to service two cities.)

Tags: reflection

##### Ellipse Isotomic
The ellipse isotomic generated by point D is teh locus of the reflection of D in the tangents to the ellipse. What shape is the isotomic when D lies on one of the foci of the ellipse? Why?

Tags: isotomic, ellipse