MathCastle
TrigonometrySuperchallengeGraphs of Sine and Cosine

Graphs of Sine and Cosine · Superchallenge problem

How many real numbers xx with 0≤x≤120\le x\le12 satisfy sin⁡πx2=cos⁡πx3\sin\dfrac{\pi x}{2}=\cos\dfrac{\pi x}{3}?