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Cos A Cos B Formula

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Cos A Cos B is the product of values of trigonometric cosine functions of angle A and angle B. Check FAQs

cos A cos B = \frac{\cos (A + B) + \cos (A - B)}{2}

cos A cos B - Cos A Cos B?A - Angle A of Trigonometry?B - Angle B of Trigonometry?

Cos A Cos B Example

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Here is how the Cos A Cos B equation looks like with Values.

Here is how the Cos A Cos B equation looks like with Units.

Here is how the Cos A Cos B equation looks like.

0.8138 = \frac{\cos (20 + 30) + \cos (20 - 30)}{2}

0.8138 = \frac{\cos (20° + 30°) + \cos (20° - 30°)}{2}

0.8138 = \frac{\cos (20 + 30) + \cos (20 - 30)}{2}

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Cos A Cos B Solution

Follow our step by step solution on how to calculate Cos A Cos B?

FIRST Step Consider the formula

cos A cos B = \frac{\cos (A + B) + \cos (A - B)}{2}

Next Step Substitute values of Variables

∴

cos A cos B = \frac{\cos (20° + 30°) + \cos (20° - 30°)}{2}

Next Step Convert Units

∴

cos A cos B = \frac{\cos (0.3491rad + 0.5236rad) + \cos (0.3491rad - 0.5236rad)}{2}

Next Step Prepare to Evaluate

∴

cos A cos B = \frac{\cos (0.3491 + 0.5236) + \cos (0.3491 - 0.5236)}{2}

Next Step Evaluate

∴

cos A cos B = 0.81379768134944

LAST Step Rounding Answer

∴

cos A cos B = 0.8138

Cos A Cos B Formula Elements

Variables

Functions

Cos A Cos B

Cos A Cos B is the product of values of trigonometric cosine functions of angle A and angle B.

Symbol: cos A cos B

Measurement: NAUnit: Unitless

Note: Value should be between -1.01 to 1.01.

Formulas to find Cos A Cos B

Angle A of Trigonometry

Angle A of Trigonometry is the value of the variable angle used to calculate Trigonometric Identities.

Symbol: A

Measurement: AngleUnit: °

Note: Value should be between 0 to 90.

Formulas to find Angle A of Trigonometry

Angle B of Trigonometry

Angle B of Trigonometry is the value of the variable angle used to calculate Trigonometric Identities.

Symbol: B

Measurement: AngleUnit: °

Note: Value should be between 0 to 90.

Formulas to find Angle B of Trigonometry

cos

Cosine of an angle is the ratio of the side adjacent to the angle to the hypotenuse of the triangle.

Syntax: cos(Angle)

Other formulas in Product to Sum Trigonometry Identities category

Go Sin A Cos B

sin A  cos B = \frac{\sin (A + B) + \sin (A - B)}{2}

Go Cos A Sin B

cos A  sin B = \frac{\sin (A + B) - \sin (A - B)}{2}

Go Sin A Sin B

sin A  sin B = \frac{\cos (A - B) - \cos (A + B)}{2}

How to Evaluate Cos A Cos B?

Cos A Cos B evaluator uses Cos A Cos B = (cos(Angle A of Trigonometry+Angle B of Trigonometry)+cos(Angle A of Trigonometry-Angle B of Trigonometry))/2 to evaluate the Cos A Cos B, The Cos A Cos B formula is defined as the product of values of trigonometric cosine functions of angle A and angle B. Cos A Cos B is denoted by cos A cos B symbol.

How to evaluate Cos A Cos B using this online evaluator? To use this online evaluator for Cos A Cos B, enter Angle A of Trigonometry (A) & Angle B of Trigonometry (B) and hit the calculate button.

FAQs on Cos A Cos B

What is the formula to find Cos A Cos B?

The formula of Cos A Cos B is expressed as Cos A Cos B = (cos(Angle A of Trigonometry+Angle B of Trigonometry)+cos(Angle A of Trigonometry-Angle B of Trigonometry))/2. Here is an example- 0.813798 = (cos(0.3490658503988+0.5235987755982)+cos(0.3490658503988-0.5235987755982))/2.

How to calculate Cos A Cos B?

With Angle A of Trigonometry (A) & Angle B of Trigonometry (B) we can find Cos A Cos B using the formula - Cos A Cos B = (cos(Angle A of Trigonometry+Angle B of Trigonometry)+cos(Angle A of Trigonometry-Angle B of Trigonometry))/2. This formula also uses Cosine (cos) function(s).

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