Undergraduate Math Journal Index
Trigonometry
Mathematical Journal articles suitable for use by undergraduate classes
An Arctangent Triangle, CMJ, March 2000, pg 119
Proof Without Words: Geometry of Subtraction Formulas, MM,
December 1999, pg 366
An Overlooked Calculus Question, CMJ, November 2002, pg 399. Shows
that exponential and logarithmic functions with the same base can intersect
for some base values between 1 and 2. Students should use graphing software
with the parameter "a" to validate the answers given in the text.
Lost Horizon, CMJ, May 2003, pg 238. Measuring angle of elevation
for celestial bodies without using a "horizon". Teams of students should
attempt to measure the sun's angle of elevation at some particular time during
the day.