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Cos Alpha Formula

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Cos Alpha is the value of the trigonometric cosine function of the non-right angle α, that is the ratio of the adjacent side of a right triangle to its hypotenuse. Check FAQs

cos α = \frac{S Adjacent}{S Hypotenuse}

cos α - Cos Alpha?S_Adjacent - Adjacent Side of Angle Alpha?S_Hypotenuse - Hypotenuse Side?

Cos Alpha Example

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Here is how the Cos Alpha equation looks like with Values.

Here is how the Cos Alpha equation looks like with Units.

Here is how the Cos Alpha equation looks like.

0.6 = \frac{3}{5}

0.6 = \frac{3m}{5m}

0.6 = \frac{3}{5}

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Cos Alpha Solution

Follow our step by step solution on how to calculate Cos Alpha?

FIRST Step Consider the formula

cos α = \frac{S Adjacent}{S Hypotenuse}

Next Step Substitute values of Variables

∴

cos α = \frac{3m}{5m}

Next Step Prepare to Evaluate

∴

cos α = \frac{3}{5}

LAST Step Evaluate

∴

cos α = 0.6

Cos Alpha Formula Elements

Variables

Cos Alpha

Cos Alpha is the value of the trigonometric cosine function of the non-right angle α, that is the ratio of the adjacent side of a right triangle to its hypotenuse.

Symbol: cos α

Measurement: NAUnit: Unitless

Note: Value should be between 0 to 1.01.

Formulas to find Cos Alpha

Adjacent Side of Angle Alpha

Adjacent Side of Angle Alpha is the length of the non-hypotenuse edge of a right triangle which is adjacent to the given non-right angle α.

Symbol: S_Adjacent

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Adjacent Side of Angle Alpha

Hypotenuse Side

The Hypotenuse Side of Right Angled Triangle is the longest side of the right-angled triangle and it is the side opposite to the right angle (90 degrees).

Symbol: S_Hypotenuse

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Hypotenuse Side

Other formulas in Trigonometry Ratios category

Go Tan Alpha

tan α = \frac{S Opposite}{S Adjacent}

Go Cot Alpha

cot α = \frac{S Adjacent}{S Opposite}

Go Sin Alpha

sin α = \frac{S Opposite}{S Hypotenuse}

Go Sec Alpha

sec α = \frac{S Hypotenuse}{S Adjacent}

How to Evaluate Cos Alpha?

Cos Alpha evaluator uses Cos Alpha = Adjacent Side of Angle Alpha/Hypotenuse Side to evaluate the Cos Alpha, The Cos Alpha formula is defined as the value of the trigonometric cosine function of the non-right angle α, that is the ratio of the adjacent side of a right triangle to its hypotenuse. Cos Alpha is denoted by cos α symbol.

How to evaluate Cos Alpha using this online evaluator? To use this online evaluator for Cos Alpha, enter Adjacent Side of Angle Alpha (S_Adjacent) & Hypotenuse Side (S_Hypotenuse) and hit the calculate button.

FAQs on Cos Alpha

What is the formula to find Cos Alpha?

The formula of Cos Alpha is expressed as Cos Alpha = Adjacent Side of Angle Alpha/Hypotenuse Side. Here is an example- 0.6 = 3/5.

How to calculate Cos Alpha?

With Adjacent Side of Angle Alpha (S_Adjacent) & Hypotenuse Side (S_Hypotenuse) we can find Cos Alpha using the formula - Cos Alpha = Adjacent Side of Angle Alpha/Hypotenuse Side.

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