Calculate sec−1
x= hypotenuse/adjacent_side
sec−1(x)
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Inverse Cosine sec−1() is used to find the angle for a given ratio of the length of the hypotenuse to the length of the adjacent side, in a right angled triangle.
Formula
To find the Inverse Secant of a given ratio: hypotenuse/adjacent_side , use the following formula.
θ = sec−1(Length_of_Hypotenuse / Length_of_Adjacent_side)