please look at attached image, and describe the error.

1 + sec (- 0) 1 - sec 0 sin( \\ 8) + tan( -0) sin 0 - tan 0 1 - sec 0 = sin 0 sin 0 cos 0 1 - sec 0 (sin 0) 1 - cos sec 0 = sin 0(1 sec 0 = sin 0 = csc 0