The length of the hypotenuse, when divided by the length of the adjacent side, becomes the secant of an angle in a right triangle. It is written as Sec, and the formula for secant is:
The formula for secant theta
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Sec X = \(\begin{array}{l}\frac{Hypotenuse}{Adjacent Side}\end{array} \)
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As we know there are six trigonometric functions and out of these, Secant, cotangent, and cosecant are hardly used.
More about Secant angles formula
Secant is Reciprocal of Cos, Sec x =
\(\begin{array}{l}\frac{1}{CosX}\end{array} \)
Examples of Secant Math Formula
Example 1: Find Sec X if Cos x = 3⁄8
Solution: As Sec X = 1/ Cos X
=1/3/8
=8/3
So, Sec X = 8/3
Practice Question for Secant trigonometry formulas
Q1) Find Sec x if tan x = 5/4.
Q2) Find Sec a, if cos a = 1/5
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