UNO High School Problem of the Week Competition

News

About

Prizes

Problems & Solutions

Scores

Archive

Links

Problem 3

Prove the following identity by only working one side of the equation:

( 1 - sin(x) ) ÷ ( 1 + sin(x) ) = (sec(x))2 - 2sec(x)tan(x) + (tan(x))2

Students, email your solutions to atew@unomaha.edu. Solutions are due by 11:59PM on Friday, September 25th, 2009. Along with your solution, include your name, your school's name, the name of your math teacher or math club moderator, and your year in school.

Solution