Math Help Forum - View Single Post

JannetheSwede · #1 July 4th, 2009, 07:25 AM

Hello

Im having problems to solve the following trig equation.

$cosx-\frac{\frac{1}{2}}{cosx}=\frac{1}{2}$

Im given the following information

$x_{1}=2n\pi$

$x_{2}=\frac{a\pi }{b}+2n\pi$

$x_{3}=\frac{c\pi }{d}+2n\pi$

0 < $\frac{a\pi }{b}+2n\pi$ < $\frac{c\pi }{d}+2n\pi$ < $2\pi$

where n are integers

im not allowed to use a calculator, so im unsure how to eaven start...