Exploring the Cosine Function: How to Find the Value of cos(-x) Using an Essential Identity

cos(-x) =

To find the value of cos(-x), we can use the identity for the cosine function:

cos(-x) = cos(x)

This identity states that the cosine of the negative angle is equal to the cosine of the positive angle

To find the value of cos(-x), we can use the identity for the cosine function:

cos(-x) = cos(x)

This identity states that the cosine of the negative angle is equal to the cosine of the positive angle.
Therefore, cos(-x) is equal to the cosine of x.

More Answers:

Understanding the Pythagorean Identity: The Connection between Tangent and Secant Functions
Understanding the Relationship between Cotangent and the Pythagorean Identity: Expanding on the Pythagorean Identity to Find the Relationship between Cotangent and Cosecant
Understanding the Odd Property of the Sine Function: A Derivation from the Unit Circle and Definition of Sine

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