# Cos2x formula ? What is cos2x formula

**URL:** <https://sorumatik.co/t/cos2x-formula-what-is-cos2x-formula/2978>\
**Category:** Mathematics\
**Tags:** formulas\
**Created:** [Kasım 5, 2022, 7:02öö UTC](https://sorumatik.co/t/cos2x-formula-what-is-cos2x-formula/2978 "2022-11-05T07:02:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ozkanhoca](https://sorumatik.co/user_avatar/sorumatik.co/ozkanhoca/32/133_2.png) [@Ozkanhoca](https://sorumatik.co/u/Ozkanhoca)\
**Post date:** [Kasım 5, 2022, 7:02öö UTC](https://sorumatik.co/t/cos2x-formula-what-is-cos2x-formula/2978/1 "2022-11-05T07:02:57Z")

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cos2x formula? What is cos2x formula

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<div class="post-metadata">

**Author:** ![Ozkanhoca](https://sorumatik.co/user_avatar/sorumatik.co/ozkanhoca/32/133_2.png) [@Ozkanhoca](https://sorumatik.co/u/Ozkanhoca)\
**Post date:** [Kasım 5, 2022, 7:06öö UTC](https://sorumatik.co/t/cos2x-formula-what-is-cos2x-formula/2978/2 "2022-11-05T07:06:58Z")

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**Cos 2x Formula**

\cos(2x) = \cos(x + x)

= \cos(x)\cos(x)-\sin(x)\sin(x)

= \cos^2(x) - \sin^2(x)

## Cos 2x formula List

- cos2x = cos^2x - sin^2x

- cos2x = 2cos^2x - 1

- cos2x = 1 - 2sin^2x

- cos2x = (1 - tan^2x)/(1 + tan^2x)