ASEC function
Description
Inverse secant function. ASEC(x) returns the inverse secant of x.
The argument x can be a real number or a matrix. When it is a matrix, the function returns a matrix with the same dimensions and with the ASEC function applied to all elements.
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Recommended book
Trigonometry: A Complete Introduction
Hugh Neill
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This book covers all areas of trigonometry including the theory and equations of tangent, sine and cosine, using trigonometry in three dimensions and for angles for any magnitude, related to triangles. Everything you will need is here in this one book. Each chapter includes not only an explanation of the knowledge and skills you need, but also worked examples and test questions.