十進π に分数をかけて表される角度のときの sin cos tan の値を求めるプログラムです。
弧度法
度数法
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三角関数 ： 主な π 関連ラジアン のときの値
sin ( 0 ) = 0
sin ( 1 * π / 2 ) = 1
sin ( 1 * π / 3 ) = .866025403784439
sin ( 2 * π / 3 ) = .866025403784439
sin ( 1 * π / 4 ) = .707106781186548
sin ( 3 * π / 4 ) = .707106781186548
sin ( 1 * π / 5 ) = .587785252292473
sin ( 2 * π / 5 ) = .951056516295154
sin ( 3 * π / 5 ) = .951056516295154
sin ( 4 * π / 5 ) = .587785252292473
sin ( 1 * π / 6 ) = .5
sin ( 5 * π / 6 ) = .5
sin ( 1 * π / 7 ) = .433883739117558
sin ( 2 * π / 7 ) = .78183148246803
sin ( 3 * π / 7 ) = .974927912181824
sin ( 4 * π / 7 ) = .974927912181824
sin ( 5 * π / 7 ) = .78183148246803
sin ( 6 * π / 7 ) = .433883739117558
sin ( 1 * π / 8 ) = .38268343236509
sin ( 3 * π / 8 ) = .923879532511287
sin ( 5 * π / 8 ) = .923879532511287
sin ( 7 * π / 8 ) = .38268343236509
sin ( 1 * π / 9 ) = .342020143325669
sin ( 2 * π / 9 ) = .642787609686539
sin ( 4 * π / 9 ) = .984807753012208
sin ( 5 * π / 9 ) = .984807753012208
sin ( 7 * π / 9 ) = .642787609686539
sin ( 8 * π / 9 ) = .342020143325669
sin ( 1 * π / 10 ) = .309016994374947
sin ( 3 * π / 10 ) = .809016994374947
sin ( 7 * π / 10 ) = .809016994374947
sin ( 9 * π / 10 ) = .309016994374947
sin ( π ) = 0
cos ( 0 ) = 1
cos ( 1 * π / 2 ) = 0
cos ( 1 * π / 3 ) = .5
cos ( 2 * π / 3 ) = -.5
cos ( 1 * π / 4 ) = .707106781186548
cos ( 3 * π / 4 ) = -.707106781186548
cos ( 1 * π / 5 ) = .809016994374947
cos ( 2 * π / 5 ) = .309016994374947
cos ( 3 * π / 5 ) = -.309016994374947
cos ( 4 * π / 5 ) = -.809016994374947
cos ( 1 * π / 6 ) = .866025403784439
cos ( 5 * π / 6 ) = -.866025403784439
cos ( 1 * π / 7 ) = .900968867902419
cos ( 2 * π / 7 ) = .623489801858734
cos ( 3 * π / 7 ) = .222520933956314
cos ( 4 * π / 7 ) = -.222520933956314
cos ( 5 * π / 7 ) = -.623489801858734
cos ( 6 * π / 7 ) = -.900968867902419
cos ( 1 * π / 8 ) = .923879532511287
cos ( 3 * π / 8 ) = .38268343236509
cos ( 5 * π / 8 ) = -.38268343236509
cos ( 7 * π / 8 ) = -.923879532511287
cos ( 1 * π / 9 ) = .939692620785908
cos ( 2 * π / 9 ) = .766044443118978
cos ( 4 * π / 9 ) = .17364817766693
cos ( 5 * π / 9 ) = -.17364817766693
cos ( 7 * π / 9 ) = -.766044443118978
cos ( 8 * π / 9 ) = -.939692620785908
cos ( 1 * π / 10 ) = .951056516295154
cos ( 3 * π / 10 ) = .587785252292473
cos ( 7 * π / 10 ) = -.587785252292473
cos ( 9 * π / 10 ) = -.951056516295154
cos ( π ) = -1
tan ( 0 ) = 0
tan ( 1 * π / 2 ) = ∞
tan ( 1 * π / 3 ) = 1.73205080756888
tan ( 2 * π / 3 ) = -1.73205080756888 tan ( 1 * π / 4 ) = 1
tan ( 3 * π / 4 ) = -1
tan ( 1 * π / 5 ) = .726542528005361
tan ( 2 * π / 5 ) = 3.07768353717525
tan ( 3 * π / 5 ) = -3.07768353717525
tan ( 4 * π / 5 ) = -.726542528005361
tan ( 1 * π / 6 ) = .577350269189626
tan ( 5 * π / 6 ) = -.577350269189626
tan ( 1 * π / 7 ) = .481574618807529
tan ( 2 * π / 7 ) = 1.2539603376627
tan ( 3 * π / 7 ) = 4.38128626753482
tan ( 4 * π / 7 ) = -4.38128626753482
tan ( 5 * π / 7 ) = -1.2539603376627
tan ( 6 * π / 7 ) = -.481574618807529
tan ( 1 * π / 8 ) = .414213562373095
tan ( 3 * π / 8 ) = 2.4142135623731
tan ( 5 * π / 8 ) = -2.4142135623731
tan ( 7 * π / 8 ) = -.414213562373095
tan ( 1 * π / 9 ) = .363970234266202
tan ( 2 * π / 9 ) = .83909963117728
tan ( 4 * π / 9 ) = 5.67128181961771
tan ( 5 * π / 9 ) = -5.67128181961771
tan ( 7 * π / 9 ) = -.83909963117728
tan ( 8 * π / 9 ) = -.363970234266202
tan ( 1 * π / 10 ) = .324919696232906
tan ( 3 * π / 10 ) = 1.37638192047117
tan ( 7 * π / 10 ) = -1.37638192047117
tan ( 9 * π / 10 ) = -.324919696232906
tan ( π ) = -∞