The Goal

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

The Mistake

Find the mistake:

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

The 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!