SubArea: Sine, Cosine, Tangent, and CotangentLevel: BProject ID: 1003076509Accepted: 1Clonable: 0Easy: 1At which point \( x\in(2\pi; 4\pi) \) has the function \( f(x)=\cos x \) a minimum?\(3\pi\)\(2 \pi \)\( 4\pi \)\( 3.5\pi \)