Please help me with these homework problems. Show all work. So i can retrace steps.

11. (10 pts) Prove the identity tan(@)+ cot(@)=sed@)csod0). Show work. HINT: Rewrite each side of the expression using sines and cosines, simplify and apply a Pythagorean identity. 12. (10 pts) (a) Find the exact value of arcsec(2). ( b ) Find the exact value of tan arcco s (c ) Find the exact value of arcco s- Co SAT 2 (d) Find the exact value of arcsin cot3TT 3 (e) Using a calculator, find arccos(0.3814), rounded to four decimal places