When talking about any right-angled triangle, there are three sides that are, hypotenuse, perpendicular, and height. The side which is the largest one and is on the side which is on the opposite to the right angle is the hypotenuse. When the length of the hypotenuse is divided by the length of the adjacent side, it gives the secant of the angle, of the right-angled triangle. Secant is denoted as 'sec'. Secant formula is derived out from the inverse cosine (cos) ratio. The secant function is the reciprocal of the cosine function, thus, the secant function goes to infinity whenever the cosine function is equal to zero (0). The secant formula along with solved examples is explained below.
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