Trigonometry Calculator
The trigonometric functions have been defined using the unit circle.
The sin(θ) is the vertical component , the cos(θ) is the horizontal coordinate of the arc endpoint.
where
Sin(q) = Opposite / Hypotenuse
Cos(q) = Adjacent / Hypotenuse
Tan(q) = Opposite / Adjacent
The table for basic trigonometric numbers of the most common angles as follows:
| Angle | sin | cos | tan | cot | sec | cosec |
|---|---|---|---|---|---|---|
| 0o | 0 | 1 | 0 | Not define | 1 | Not define |
| 30o | 1/2 | √3/2 | 1/√3 | √3 | 2/√3 | 2 |
| 45o | 1/√2 | 1/√2 | 1 | 1 | √2 | √2 |
| 60o | √3/2 | 1/2 | √3 | 1/√3 | 2 | 2/√3 |
| 90o | 1 | 0 | Not define | 0 | Not define | 1 |
Difference between radian (RED) and degrees (DEG)
A radian is equal to 180 degrees because a whole circle is 360 degrees and is equal to two pi radians. A radian is not as widely used in the measurement of circles and angles as a degree because it involves the knowledge of higher mathematics and includes tangents, sine, and cosines. A sin(θ) is the vertical component and cos(θ) is the horizontal coordinate of the arc endpoint.