Решить все с полным решением : 50. а)t=0; б)t=а/2; в)t=3п/2; г)t=п. 51. а)t=-2п; б)t=-п/2; в)t=-3п/2; г)t=-п. 52. а) t =5п/6; б)t=5п/4; в)t=7п/6 ; г) t =7п/4. 53.а)t=-7п/4; б)t=-4п/3; в)t=-5п/6; г)t=-5п/3. 54. а)t=13п/6; б) t=-8п/3; в)t=23п/6; г)t=-11п/4.
Sin Π/2=1; cos Π/2=0
Sin 3Π/2=-1; cos 3Π/2=0
Sin Π=0; cos Π=-1
Sin -2Π=0; cos -2Π=1
Sin -Π/2=-1; cos -Π/2=0
Sin -3Π/2=1; cos -3Π/2=0
Sin -Π=0; cos -Π=-1
Sin 5Π/6=1/2; cos 5Π/6=-√3/2
Sin 5Π/4=-√2/2; cos 5Π/4=-√2/2
Sin 7Π/6=-1/2; cos 7Π/6=-√3/2
Sin 7Π/4=-√2/2; cos 7Π/4=√2/2
Sin -7Π/4=√2/2; cos -7Π/4=√2/2
Sin -4Π/3=√3/2; cos -4Π/3=-1/2
Sin -5Π/6=-1/2; cos -5Π/6=-√3/2
Sin -5Π/3=√3/2; cos -5Π/3=1/2
Sin 13Π/6=1/2; cos 13Π/6=√3/2
Sin -8Π/3=-√3/2; cos -8Π/3=-1/2
Sin 23Π/6=-1/2; cos 23Π/6=√3/2
Sin -11Π/4=-√2/2; cos -11Π/4=-√2/2