Functions a sine and a cosine belong to the field of mathematics which is called trigonometry therefore also functions are called trigonometrical. It agrees to the oldest of definitions they express the size of an acute angle in a rectangular triangle through the relations of lengths of its parties. Calculation of values of a sine at the modern level of development of the electronic equipment — quite simple task.
It is required to you
- Windows calculator.
Instruction
1. Use the calculator for calculation of a sine of the angle - calculation of trigonometrical functions is provided in most of them. Considering existence of the calculator in many mobile phones, some watch and other mobile gadgets, not to mention computers, it is, perhaps, the most available way of calculation of a sine. If you decide to use the program calculator of the computer, then look for the reference to its start in the OS main menu. If it is Windows, press the Win button, select the All Programs item in the menu, pass into the subsection "Standard" and click "Calculator" a line. To open access to teams of calculation of trigonometrical functions in the started application press a combination of the Alt keys + 2.
2. If in initial conditions the size of a corner which sine is required to be calculated is given in degrees, make sure that near the inscription "degrees" in the interface of the calculator there is a mark. For input of initial size in other units - radians or grads - this mark should be moved to the respective field.
3. Enter from the keyboard or by means of buttons on the screen the size of a corner and click the button with the inscription sin. The calculator will display required value.
4. The size of a corner has to be not necessarily known from conditions if other parameters which are indirectly determining its size are specified in them. In such cases as addition to the calculator also knowledge of some theorems from the field of trigonometry will be required. For example, in conditions only lengths of a hypotenuse and the leg lying opposite to a corner which sine is required to be calculated can be given. Then you can cost without trigonometrical functions of the calculator: enter length of the known leg, press a division sign - "slash" - gain length of a hypotenuse and press Enter. The size corresponding to a sine of the angle will appear in a calculator window.