Common Trigonometry Mistakes
Example: Solving an Equation

The Goal

Solve the following equation for 0 ≤ x ≤ 2π:

goal


The Mistake

Find the mistake:

mistake

(Roll the mouse over the math to see a hint in red)


The Correction

correction

(Roll the mouse over the area above to see the correction in blue)


An Explanation

After cancelling the 2 (a common factor) from the equation, sin(x) should have been subtracted from both sides. Take care with steps like this!

Home Page | Common Trigonometry Mistakes | Privacy Policy