Online Calculators & Tools

Calculation with cos(angle deg|rad):

x (deg) | x (rad) | cos x |
---|---|---|

180° | π | -1 |

150° | 5π/6 | -√3/2 |

135° | 3π/4 | -√2/2 |

120° | 2π/3 | -1/2 |

90° | π/2 | 0 |

45° | π/4 | √2/2 |

60° | π/3 | 1/2 |

30° | π/6 | √3/2 |

0° | 0 | 1 |

Rule name | Rule |
---|---|

Symmetry | cos(-θ) = cos θ |

Symmetry | cos(90°- θ) = sin θ |

Pythagorean identity | sin^{2}(α) + cos^{2}(α) = 1 |

cos θ = sin θ / tan θ | |

cos θ = 1 / sec θ | |

Double angle | cos 2θ = cos^{2}θ- sin^{2} θ |

Angles sum | cos(α+β) = cos α cosβ - sin α sin β |

Angles difference | cos(α-β) = cos α cos β + sinα sinβ |

Sum to product | cos α + cos β = 2 cos [(α+β)/2] cos [(α-β)/2] |

Difference to product | cos α - cos β = - 2 sin [(α+β)/2] sin [(α-β)/2] |

Law of cosines | |

Derivative | cos' x = - sin x |

Integral | ∫ cos x dx = sin x + C |

Euler's formula | cos x = (e + ^{ix}e^{-ix}) / 2 |

A Cosine Calculator is a handy tool for computing cosine values and their inverses, known as arc cosine or inverse cosine, which are essential in trigonometry, geometry, and various scientific and engineering applications. Cosine is a trigonometric function that represents the ratio of the adjacent side to the hypotenuse in a right triangle. Our Cosine Calculator provides a convenient way to compute cosine values and their inverses accurately and efficiently.

Our Cosine Calculator is ideal for students, educators, engineers, and anyone else working with trigonometric functions. Whether you're solving geometric problems, analyzing oscillatory motion, or designing structures, our calculator simplifies the process and ensures accurate results every time.

Moreover, calculator with inverse cosine is accessible online, eliminating the need for manual calculations or specialized software. You can use it anytime, anywhere, from any internet-enabled device, whether it's a computer, tablet, or smartphone. This accessibility ensures that you have access to accurate cosine calculations whenever you need them.

Furthermore, our Cosine Calculator is designed with user-friendliness in mind, featuring a clean and intuitive interface that makes it easy to input values and obtain results. Whether you're a math novice or a seasoned professional, our calculator provides a seamless user experience that streamlines your workflow and saves you time.

In summary, our Cosine Calculator offers a comprehensive set of features and benefits to meet your trigonometric computation needs. Whether you're a student, educator, engineer, or researcher, our calculator provides the tools and capabilities you need to perform accurate and efficient cosine calculations. Try it now and experience the convenience and versatility of our Cosine Calculator for your mathematical and scientific tasks!