RADIANS function
Description
Radians function. RADIANS(x) converts an angle x expressed in degrees to radians.
The relation between the 2 units is as follows: 2 x Pi radians = 360 degrees.
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 RADIANS function applied to all elements.
Examples
RADIANS(90) equals 1.5707963 (=Pi/2)
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Related functions
External links
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.