## What is the best calculator online?

The Best Online Scientific Calculators

- Desmos Scientific. Desmos is a free-to-use calculator that provides easy access to primary functions, variables, and trigonometric calculations.
- Meta Calculator.
- GeoGebra.
- Bankrate.
- Nerdwallet.
- CreditKarma.
- Fidelity Retirement Calculator.
- Ultimate Retirement Calculator.

**What is the tan inverse of 3?**

Inverse Tangent Table

Tangent | Angle (degrees) | Angle (radians) |
---|---|---|

–√3 3 | -30° | –π 6 |

0 | 0° | 0 |

√3 3 | 30° | π 6 |

1 | 45° | π 4 |

### What is the value cos 60?

1/2

The value of cos 60 is 1/2. Trigonometry is used to study the measurements of right-angled triangles that deals with the parameters such as length, height and angles of the triangle.

**What is the value of cot 40?**

1.1918

Cot 40 degrees is the value of cotangent trigonometric function for an angle equal to 40 degrees. The value of cot 40° is 1.1918 (approx).

## How do you do sin 42?

The value of sin 42 degrees can be calculated by constructing an angle of 42° with the x-axis, and then finding the coordinates of the corresponding point (0.7431, 0.6691) on the unit circle. The value of sin 42° is equal to the y-coordinate (0.6691). ∴ sin 42° = 0.6691.

**How do you write cos 2x on a calculator?**

For either the graphic solution or the algebraic solution it is important to realize that cos2x = (cos x)(cos x) = (cos x)2. To enter cos2x into your calculator, calculate cos x and square it. For an algebraic solution write y = cos x and then the equation becomes 2 y2 – 3 y – 4 = 0.

### How do you find the inverse tangent of 6?

To find the value of tan 6 degrees using the unit circle:

- Rotate ‘r’ anticlockwise to form 6° angle with the positive x-axis.
- The tan of 6 degrees equals the y-coordinate(0.1045) divided by x-coordinate(0.9945) of the point of intersection (0.9945, 0.1045) of unit circle and r.

**What fraction is cos 60?**

The value of cos 60 is 1/2.