Which of the following has the greatest value?(A) cos50∘\cos 50^\circcos50∘ (B) sin50∘\sin 50^\circsin50∘ (C) tan50∘\tan 50^\circtan50∘ (D) 1sin50∘\frac{1}{\sin 50^\circ}sin50∘1 (E) 1cos50∘\frac{1}{\cos 50^\circ}cos50∘1