double Cos(x)Cosine of x in radians. 0.001.052.093.144.195.246.28-1.0-0.6-0.20.20.61.0Example = Block { ShowCos(0); ShowCos(Math.PI / 3); ShowCos(Math.PI / 2);};The cosine of 0.00000000 is 1.00000000.The cosine of 1.04719755 is 0.50000000.The cosine of 1.57079633 is 0.00000000.