Weknow that the exact value of cos 0 degrees is 1. So, cos 180 degree is - (cos 0) which is equal to - (1) Therefore, the value of cos 180 degrees = -1. It is also represented in terms of radians. So, value of cos pi = -1. There are some other alternative methods to find the value of cos 180°. To find out the value, some degree values of sine Sincethe sine, cosine, and tangent are all functions of the angle c, we can determine (measure) the ratios once and produce tables of the values of the sine, cosine, and tangent for various values of c. Or if we know the ratio of any two sides of a right triangle, we can find the value of the angle between the sides. Theyare Sin, Cos, Tan, Cosec, Sec, Cot that stands for Sine, Cosecant, Tangent, Cosecant, Secant respectively. Sin and Cos are basic trig ratios that tell about the shape of a right triangle. A right-angled triangle is a triangle in which one of the angles is a right-angle i.e. it is of 90 0. The hypotenuse of a right-angled triangle is the 1cos sin = sin 1 cos 32. tan 2 = r 1+cos 1 cos Other Useful Trig Formulas Law of sines 33. sin = sin = sin Law of cosines 34. a2 = b2 +c2 2 b c cos b2 = a2 +c2 2 a c cos c2 = a2 +b2 2 a b cos Area of triangle 35. A= 1 2 absin 2. Title: Math formulas for trigonometric functions Author: Milos Petrovic ( Axeimplements sine, cosine, and inverse tangent natively. One period is [0, 256) and the results are [-127, 127] for maximum precision. The inverse tangent takes dX and dY parameters, rather than a single argument. This is because it is most often used to calculate angles. Sourcecode: fdlibm/s_sin.c and fdlibm/k_sin.c. To see that this is really the code that runs on x86: compile a program that calls sin (); type gdb a.out, then break sin, then run, then disassemble. @Henry: don't make the mistake of thinking that is good code though. It's really terrible, don't learn to code that way! sBHRUWc.

cara menghafal sin cos tan dengan tangan