3 = 2 2 + = cos ⎛ π ⎞ ⎜ ⎟ 2 4 3 = ⋅ 2 π + 4 43. cot 2 + π ⋅ 4 ⎝ ⎠ 4 3 3 3 = 0 44. (3π) = − sin + cot π = 3 ⋅ 2 3 + 1 = 2 3 + 1 26. 3 4 3 (π ) = − sin + 2π = − sin (π) = 0 sin π (−π) (π) sec = sec = 27. 45. tan π − cos 0 = 0 − 1 = −1 −1 3π + 0 = −1 (−3π) 28. = − tan(3π) 46. + (0 ) (0) =− tan + 3π = − tan π tan sin = 0 = −1 tan 2 + π = + = cot 1 0 1 + = + = + sin 45º cos 60º 2 1 1 2 2 29. 2 π 2 2 2 47. csc π 30. sin 30º − cos = 45º 1 − 2 = 1 − 2 2 2 2 48. π sec − csc 2 = −1 − 1 = − 2
= cos ⎛ π ⎞ ⎜ 2 ⎟ 43. π + 4 cot π = 2 ⋅ 2 + 4 ⋅ 3 = 2 2 + 4 3 ⎝ ⎠ 4 3 3 3 = 0 26. sin = − sin (3π) = − sin (π + 2π ) = − sin (π) = 0 44. π + cot π = 3 ⋅ 2 3 + 1 = 2 3 + 1 3 4 3 27. sec (−π) = sec (π) = −1 45. tan π − cos 0 = 0 − 1 = −1 3π 28. tan (−3π) = − tan(3π) =− tan (0 + 3π ) = − tan (0) = 0 46. sin 2 + tan π = −1 + 0 = −1 29. sin 45º + cos 60º = 2 + 1 = 1 + 2 2 2 2 47. csc π + cot π = 1 + 0 = 1 2 2 π 30. sin 30º − cos 45º = 1 − 2 = 1 − 2 2 2 2 48. sec π − csc 2 = −1 − 1 = − 2
62514-0132318806_ISM_02-1.docx