40) Verify each identity. a. tan Osec20 = sin-0 Cos40 b. sin 0 cot 0 + cosse sin 0 - = cot 0 C. sec20 CSC 20 = sec20 - 1 d. cos 0 sin 0 + cos30 csc 0 = cos 0 csc 0 41) Solve for x on the interval [0,27]. a. sin 2x + cos x = 0 b. 5sin x + 12 sinx + 7 = 0 c. 4cos2x - 3 = 0 d. cos (x - 7) 3 tan (x - ")] = 3 e. tan2x - 3 = 0 f. secx = 1 CSC x 42) Solve for x on the interval [0, it]. a. 5 cosx + 3 = 8 b. sin x tan x - V3 sin x = 0 c. 2 sin 3x - 1 = 0 d. sec x-1 = 2 sin2x 43) Solve for x. Give all solutions. a. sinx = = b. cosx = V2 c. tan x = V3 d. secx = -1 44) Evaluate each expression. a. sin-1 (3)