What is the value of det(sinθcosθ−cosθsinθ)\det \begin{pmatrix} \sin \theta & \cos \theta \\ -\cos \theta & \sin \theta \end{pmatrix}det(sinθ−cosθcosθsinθ)?
111
−1-1−1
sin2θ−cos2θ\sin^2 \theta - \cos^2 \thetasin2θ−cos2θ
000