Tangentes e Gráficos em javaScript

<br /> 6, 4, 18, -3, 4, 5, 0, 3, 6, 3, 30, 3, 4, 5, -2, 3, 4, 5, -1, 0.3<br />
<br /> 5, 0, -10, 6, -1, 4, 15, 4, 5, -5, 3, 4, 5, -1, 6, 4, 8, -3, 4, 0.5<br />
<br /> 1, 8, 3, -8, -5, 3, 9, 5, 7, 5, -3, -1, 6, -4, 8, -3, 4, -1, 4, 4.5<br />
<br /> 30, 28.190778623577252, 22.98133329356934, 15.000000000000004, 5.209445330007912, -5.2094453300079095, -14.999999999999993, -22.981333293569335, -28.19077862357725, -30, -28.190778623577252, -22.98133329356934, -15.000000000000014, -5.2094453300079095, 5.209445330007899, 15.000000000000004, 22.981333293569335, 28.190778623577252, 30 <br />
<br /> 0, 10.260604299770062, 19.283628290596177, 25.980762113533157, 29.544232590366242, 29.544232590366242, 25.98076211353316, 19.283628290596184, 10.260604299770065, 0, -10.26060429977006, -19.283628290596177, -25.980762113533153, -29.544232590366242, -29.544232590366242, -25.980762113533157, -19.283628290596187, -10.260604299770058, 0<br />
<br /> 0, 0.36397023426620234, 0.8390996311772799, 1.7320508075688767, 15.671281819617707, -15.671281819617711, -1.7320508075688783, -0.8390996311772804, -0.36397023426620256, 0, 0.3639702342662023, 0.8390996311772799, 1.7320508075688754, 15.67128181961771, -15.671281819617723, -1.732050807568877, -0.8390996311772806, -0.3639702342662022,0<br />