Sine function.vi Write a VI that, on its front panel, accepts an angle in degrees in a Numeric Control and displays the sine of this angle in a Numeric Indicator. On the block diagram, evaluate the sine function using the Sine icon. From the Context Help Window for this icon, you will find that its argument x input must be in radians, so you must first convert the angle input by the Numeric Control from degrees to radians. Suggested icon: Degree to Radian.