csc 0 1 csc Choose the correct proof below OA csc 0 OB csc 0 cos 0 cot 0 OC csc 0 1 csc 0 1 csc 0 1 csc 0 1 sin 0 sin 9 sec 0 1 sin 0 ein 0 1 sin 0 2 sin 0 sin 0 sin 0 1 sin 0 sin 0 1 sin 9 in 201 sin e 2 cos e cos sin 0 cos 0 cos 0 cot 0 cos 0 cot cos 0 cot