SubArea: Sine, cosine, tangent and cotangentLevel: BProject ID: 1003076601Source Problem: 2010016804Accepted: 1Clonable: 1Easy: 1How many \( x \)-intercepts has the graph of the function \( f(x)=\cos 2x \) on the interval \( [-\pi; 2\pi] \)?\( 6 \)\( 4 \)\( 5 \)\( 3 \)
