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    Derivative of Cosx

    f(x) = cosx ⇒ f'(x) = -sinx.

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    Pow

    @pow

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    What is the Derivative of Cosx ?

    The derivative of cosx is -sinx.

    Proof of Derivative of Cosx
    Way 1

    Way 2

    Way 3

    By using the infinite series expansions of the sinx and cosx functions, we can prove that the derivative of cosx is equal to -sinx. The infinite series expansions of the sinx and cosx functions are as follows.


    Published Date:

    June 11, 2024

    Updated Date:

    June 12, 2024