PLEASE HELP ASAP IN ENGLISH!!!!!!!!!!!!!

Which of the following are identities? I. sin (-x) = - sinc 2 (1+cos 27) is equivalent to: I1. cos (-x) = cos z O cos2 a Ill. tan (-2) = - tan a O sin? z IV. cos (-z) = - cos x 1 -cos z O Ill and IV O (2) - COB Z O I, III, and IV The trigonometric relation cos ( + + cos ( - z) is equivalent to: O I, II, and Ill cos 2z O Il only O sin z Which of the following expressions is equivalent to (cos # + tan a) sin 2 O cos i cotx + secx O COS Z O cos x + cot z L Given that cosa = {, cosy = , and a and y are both acute angles, the value of tan(a + y) is tan x + sec x O sinx + tan x 3 m Which of the following statements are true? O is 1. sin 2x # 2 sin z O 26 Il. sin 2x = sin(x + x) Solve 2 cot x sin x = sin x on the domain 0