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Natural trig functions | Inverse trig functions

Natural and Reciprocal Trigonometric Functions

alpha = the angle between the x-axis and the ray from the origin to the point P.

z = sin(alpha) = y / r   z = csc(alpha) = r / y
z = cos(alpha) = x / r   z = sec(alpha) = r / x
z = tan(alpha) = y / x   z = cot(alpha) = x / y



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