Почему при расчете косинуса и синуса знаки слишком часто изменяются?

Angle: A = 36.552475cosA = 0.41155487 sinA = -0.911385
Angle: A = 37.184708cosA = 0.87058604 sinA = -0.49201626
Angle: A = 38.290146cosA = 0.83036494 sinA = 0.5572199
Angle: A = 39.400665cosA = -0.13038483 sinA = 0.9914635
Angle: A = 39.400665cosA = -0.13038483 sinA = 0.9914635
Angle: A = 40.00627cosA = -0.6715978 sinA = 0.74091595
Angle: A = 40.51541cosA = -0.9475571 sinA = 0.31958655
Angle: A = 41.112106cosA = -0.963396 sinA = -0.2680822
Angle: A = 41.112106cosA = -0.963396 sinA = -0.2680822
Angle: A = 41.633545cosA = -0.7018248 sinA = -0.71234965
Angle: A = 42.22084cosA = -0.18950734 sinA = -0.9818793
Angle: A = 42.79741cosA = 0.37640074 sinA = -0.9264569
Angle: A = 43.331665cosA = 0.7957011 sinA = -0.6056895
Angle: A = 43.8983cosA = 0.9964743 sinA = -0.08389824
Angle: A = 44.443726cosA = 0.89541745 sinA = 0.4452276
Angle: A = 44.999985cosA = 0.52533495 sinA = 0.8508955
Angle: A = 44.999985cosA = 0.52533495 sinA = 0.8508955
Angle: A = 46.1017cosA = -0.5214986 sinA = 0.8532521
Angle: A = 46.63658cosA = -0.8835964 sinA = 0.4682493
Angle: A = 46.63658cosA = -0.8835964 sinA = 0.4682493
Angle: A = 47.72632cosA = -0.8239619 sinA = -0.5666452
Angle: A = 47.72632cosA = -0.8239619 sinA = -0.5666452
Angle: A = 48.81407cosA = 0.11910213 sinA = -0.992882
Angle: A = 48.81407cosA = 0.11910213 sinA = -0.992882
Angle: A = 49.398697cosA = 0.6472801 sinA = -0.7622522
Angle: A = 49.899094cosA = 0.9336271 sinA = -0.3582463
Angle: A = 50.980606cosA = 0.7550122 sinA = 0.65571076
Angle: A = 51.58197cosA = 0.25157627 sinA = 0.96783745
Angle: A = 52.05786cosA = -0.21977375 sinA = 0.9755509
Angle: A = 52.6668cosA = -0.738284 sinA = 0.67449
Angle: A = 52.6668cosA = -0.738284 sinA = 0.67449
Angle: A = 53.746162cosA = -0.94305867 sinA = -0.3326265
Angle: A = 53.746162cosA = -0.94305867 sinA = -0.3326265
Angle: A = 54.37207cosA = -0.5694208 sinA = -0.82204616
Angle: A = 54.81929cosA = -0.15791744 sinA = -0.9874523
Angle: A = 54.81929cosA = -0.15791744 sinA = -0.9874523
Angle: A = 55.451637cosA = 0.45624056 sinA = -0.88985646
Angle: A = 55.88553cosA = 0.78806365 sinA = -0.6155938
Angle: A = 57.171455cosA = 0.8122556 sinA = 0.58330166
Angle: A = 57.171455cosA = 0.8122556 sinA = 0.58330166
Angle: A = 57.82878cosA = 0.2866066 sinA = 0.95804834
Angle: A = 58.90268cosA = -0.70556164 sinA = 0.70864856
Angle: A = 59.57421cosA = -0.99327385 sinA = 0.11578899
Angle: A = 60.64225cosA = -0.5800635 sinA = -0.81457126
Angle: A = 61.69924cosA = 0.42429656 sinA = -0.9055233
Angle: A = 62.38697cosA = 0.9026612 sinA = -0.43035185
Angle: A = 63.083443cosA = 0.9685179 sinA = 0.24894385
Angle: A = 63.083443cosA = 0.9685179 sinA = 0.24894385
Angle: A = 63.43495cosA = 0.823582 sinA = 0.56719726
Angle: A = 64.13367cosA = 0.26575056 sinA = 0.9640418
Angle: A = 64.8407cosA = -0.42417336 sinA = 0.905581
Angle: A = 64.8407cosA = -0.42417336 sinA = 0.905581
Angle: A = 64.8407cosA = -0.42417336 sinA = 0.905581
Angle: A = 65.87902cosA = -0.99554527 sinA = 0.09428478
Angle: A = 65.87902cosA = -0.99554527 sinA = 0.09428478
Angle: A = 66.59529cosA = -0.8128048 sinA = -0.5825361
Angle: A = 67.31944cosA = -0.22291072 sinA = -0.97483885
Angle: A = 68.0513cosA = 0.48560753 sinA = -0.8741769
Angle: A = 68.0513cosA = 0.48560753 sinA = -0.8741769
Angle: A = 69.0755cosA = 0.99921846 sinA = -0.03952759
Angle: A = 69.0755cosA = 0.99921846 sinA = -0.03952759
Angle: A = 69.8142cosA = 0.76538116 sinA = 0.6435773
Angle: A = 70.55997cosA = 0.12553558 sinA = 0.9920891
Angle: A = 71.312675cosA = -0.5865891 sinA = 0.8098847
Angle: A = 72.07208cosA = -0.9830192 sinA = 0.18350273
Angle: A = 72.07208cosA = -0.9830192 sinA = 0.18350273
Angle: A = 72.83808cosA = -0.83566695 sinA = -0.5492365
Angle: A = 72.83808cosA = -0.83566695 sinA = -0.5492365
Angle: A = 74.389015cosA = 0.53253084 sinA = -0.84641063
Angle: A = 75.173546cosA = 0.9748659 sinA = -0.22279231
Angle: A = 75.173546cosA = 0.9748659 sinA = -0.22279231
Angle: A = 75.96376cosA = 0.8443011 sinA = 0.535869
Angle: A = 76.1593cosA = 0.7240929 sinA = 0.68970245
Angle: A = 77.7352cosA = -0.693387 sinA = 0.7205654
Angle: A = 77.7352cosA = -0.693387 sinA = 0.7205654
Angle: A = 78.53047cosA = -0.99995637 sinA = 0.009344402
Angle: A = 78.53047cosA = -0.99995637 sinA = 0.009344402
Angle: A = 79.330215cosA = -0.7035617 sinA = -0.7106341
Angle: A = 79.330215cosA = -0.7035617 sinA = -0.7106341
Angle: A = 80.94211cosA = 0.7389398 sinA = -0.67377144
Angle: A = 80.94211cosA = 0.7389398 sinA = -0.67377144
Angle: A = 81.869896cosA = 0.98228884 sinA = 0.18737285
Angle: A = 82.673615cosA = 0.54684466 sinA = 0.8372341
Angle: A = 82.673615cosA = 0.54684466 sinA = 0.8372341
Angle: A = 83.480194cosA = -0.2260188 sinA = 0.97412294
Angle: A = 84.289406cosA = -0.86098367 sinA = 0.50863254
Angle: A = 85.10088cosA = -0.9616386 sinA = -0.27431935
Angle: A = 85.10088cosA = -0.9616386 sinA = -0.27431935
Angle: A = 85.91438cosA = -0.46126023 sinA = -0.8872649
Angle: A = 86.72954cosA = 0.32946792 sinA = -0.9441668
Angle: A = 86.72954cosA = 0.32946792 sinA = -0.9441668
Angle: A = 88.36343cosA = 0.9215152 sinA = 0.3883422
Angle: A = 89.18154cosA = 0.34651107 sinA = 0.93804586
Angle: A = 89.18154cosA = 0.34651107 sinA = 0.93804586
Angle: A = 90.0cosA = -0.44807363 sinA = 0.89399666
Angle: A = 90.81846cosA = -0.958891 sinA = 0.28377473
Angle: A = 91.63657cosA = -0.8626115 sinA = -0.50586706
Angle: A = 91.63657cosA = -0.8626115 sinA = -0.50586706
Angle: A = 92.45403cosA = -0.22110794 sinA = -0.97524935
Angle: A = 93.270485cosA = 0.5592673 sinA = -0.8289874
Angle: A = 93.270485cosA = 0.5592673 sinA = -0.8289874
Angle: A = 94.08564cosA = 0.9868841 sinA = -0.16143017
Angle: A = 94.89909cosA = 0.7952879 sinA = 0.6062319
Angle: A = 95.710594cosA = 0.10777204 sinA = 0.9941756
Angle: A = 95.710594cosA = 0.10777204 sinA = 0.9941756
Angle: A = 96.519775cosA = -0.6451346 sinA = 0.7640689
Angle: A = 97.32641cosA = -0.99801844 sinA = 0.062922284
Angle: A = 98.130104cosA = -0.73797494 sinA = -0.6748282
Angle: A = 98.930595cosA = -0.029568879 sinA = -0.99956274
Angle: A = 98.930595cosA = -0.029568879 sinA = -0.99956274
Angle: A = 99.72758cosA = 0.6942725 sinA = -0.7197122
Angle: A = 99.72758cosA = 0.6942725 sinA = -0.7197122
Angle: A = 100.52079cosA = 0.99994826 sinA = -0.0101746395
Angle: A = 101.30994cosA = 0.7116364 sinA = 0.70254797
Angle: A = 102.09476cosA = 0.007004104 sinA = 0.99997544
Angle: A = 102.26477cosA = -0.16228831 sinA = 0.9867434
Angle: A = 103.840675cosA = -0.9859015 sinA = -0.16732697
Angle: A = 104.62087cosA = -0.58305293 sinA = -0.8124342
Angle: A = 104.62087cosA = -0.58305293 sinA = -0.8124342
Angle: A = 104.62087cosA = -0.58305293 sinA = -0.8124342
Angle: A = 105.61101cosA = 0.359427 sinA = -0.9331732
Angle: A = 106.389534cosA = 0.9111969 sinA = -0.41197112
Angle: A = 106.389534cosA = 0.9111969 sinA = -0.41197112
Angle: A = 107.16192cosA = 0.9401356 sinA = 0.34080067
Angle: A = 108.17799cosA = 0.20547865 sinA = 0.9786616
Angle: A = 108.9465cosA = -0.532504 sinA = 0.8464275
Angle: A = 109.70798cosA = -0.9694628 sinA = 0.2452384
Angle: A = 109.70798cosA = -0.9694628 sinA = 0.2452384
Angle: A = 110.74608cosA = -0.70360684 sinA = -0.71058947
Angle: A = 111.80141cosA = 0.27141955 sinA = -0.9624611
Angle: A = 112.55724cosA = 0.8576613 sinA = -0.51421505
Angle: A = 112.55724cosA = 0.8576613 sinA = -0.51421505
Angle: A = 113.62938cosA = 0.86177206 sinA = 0.50729567
Angle: A = 114.376465cosA = 0.28754923 sinA = 0.9577659
Angle: A = 114.376465cosA = 0.28754923 sinA = 0.9577659
Angle: A = 115.46335cosA = -0.71401525 sinA = 0.70013016
Angle: A = 116.200096cosA = -0.9992461 sinA = 0.038822293
Angle: A = 117.299576cosA = -0.48830703 sinA = -0.8726719
Angle: A = 118.02452cosA = 0.21314847 sinA = -0.97701985
Angle: A = 118.412674cosA = 0.5670743 sinA = -0.82366663
Angle: A = 118.412674cosA = 0.5670743 sinA = -0.82366663
Angle: A = 119.134285cosA = 0.96983683 sinA = -0.2437551
Angle: A = 120.25644cosA = 0.6402917 sinA = 0.76813185
Angle: A = 120.25644cosA = 0.6402917 sinA = 0.76813185
Angle: A = 121.39027cosA = -0.42498857 sinA = 0.9051987
Angle: A = 122.09259cosA = -0.9091644 sinA = 0.41643733
Angle: A = 123.23171cosA = -0.7586233 sinA = -0.6515295
Angle: A = 123.23171cosA = -0.7586233 sinA = -0.6515295
Angle: A = 124.38034cosA = 0.28348932 sinA = -0.9589754
Angle: A = 124.38034cosA = 0.28348932 sinA = -0.9589754
Angle: A = 125.53769cosA = 0.9920704 sinA = -0.12568367
Angle: A = 125.53769cosA = 0.9920704 sinA = -0.12568367
Angle: A = 126.209465cosA = 0.85473365 sinA = 0.5190669
Angle: A = 126.209465cosA = 0.85473365 sinA = 0.5190669
Angle: A = 126.209465cosA = 0.85473365 sinA = 0.5190669
Angle: A = 126.70285cosA = 0.5069581 sinA = 0.86197066
Angle: A = 127.36667cosA = -0.13178179 sinA = 0.99127877
Angle: A = 128.01895cosA = -0.70643526 sinA = 0.7077777
Angle: A = 128.53017cosA = -0.9623893 sinA = 0.27167413
Angle: A = 129.69907cosA = -0.62648004 sinA = -0.7794374
Angle: A = 129.69907cosA = -0.62648004 sinA = -0.7794374
Angle: A = 130.8724cosA = 0.4761848 sinA = -0.87934524
Angle: A = 130.8724cosA = 0.4761848 sinA = -0.87934524
Angle: A = 131.49646cosA = 0.9002593 sinA = -0.43535402
Angle: A = 132.04922cosA = 0.9947685 sinA = 0.10215489
Angle: A = 132.66269cosA = 0.75456995 sinA = 0.6562196
Angle: A = 133.22853cosA = 0.2851442 sinA = 0.95848465
Angle: A = 133.83086cosA = -0.30807462 sinA = 0.9513622