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General Solution of $$\cos x=a$$
## Formula
If:
$$\cos x=a$$
then:
$$x=2n\pi\pm\cos^{-1}a,\quad n\in\mathbb Z$$
## Usage
- Used to obtain the complete general solution of a cosine equation.
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General Solution of $$\cos x=a$$
## Formula
If:
$$\cos x=a$$
then:
$$x=2n\pi\pm\cos^{-1}a,\quad n\in\mathbb Z$$
## Usage
- Used to obtain the complete general solution of a cosine equation.
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