I need help solving these questions:

Add and subtract as indicated. Then simplify your answers if possible. Leave all an- swers in terms of sin 0 and/or cos 0. sin e 27. + cos 8 28. sin 0 + cos 8 sin 0 sin 0 cos 0 1 29. 1 1 sin 0 30. 1 cos 0 cos 0 sin 0 1 31. sin 0 + 32. cos 0 + 1 cos e sin 0 33. sin 0 1 sin 0 34. cos 0 cos 0 Multiply. 35. (sin 0 + 4)(sin 0 + 3) 36. (cos 0 + 2)(cos 0 - 5) 37. (2 cos 0 + 3)(4 cos 0 - 5) 38. (3 sin 0 - 2)(5 cos 0 - 4) 39. (1 - sin 0)(1 + sin 0) 40. (1 - cos 0)(1 + cos 0) 41. (1 - tan 0)(1 + tan 0) 42. (1 - cot 0)(1 + cot ()\f81. 82. 83. 85. Simplify the expression '4)? + 4 as much as possible after substituting 2 tan 6 for x. Simplify the expression \\sz + I as much as possible after substituting tan 9 for x. ' , Simplify the expression V9 12 as much as possible after substituting 3 sin 9 for x. ' . Simplify the expression V25 - x2 as much as possible after substituting 5 sin 6' for x. Simplify the expression NM):2 + 16 as much as possible after substituting 2tan9forx. s. . .rT