SubArea: Sine, cosine, tangent and cotangentLevel: BProject ID: 1103076612Source Problem: 2010016403Accepted: 1Clonable: 1Easy: 1Identify the function shown in the graph.f(x)=−cos2xf(x)=cos(−2x)f(x)=−sin2xf(x)=sin(−2x)
