In a right angled triangle, the secant of an angle is:

The length of the hypotenuse divided by the length of the adjacent side.

The abbreviation is sec

It is not commonly used, and is equal to 1/cosine

The length of the hypotenuse divided by the length of the adjacent side.

The abbreviation is sec

**sec θ = hypotenuse / adjacent**It is not commonly used, and is equal to 1/cosine

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