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Line 1: − − [[Image:Stalin-140508 27880t.jpg|left|202px|thumb|[[Joseph Stalin]]'s atheistic regime killed tens of millions of people.]]
Undo revision 1018464 by Lordsserveant52 (talk) Stalin is not trig
'''Trigonometry''' is the study of angles and [[triangle]]s, relying heavily on three basic functions: [[sine]], [[cosine]] and [[tangent]]. These functions are abbreviated as "sin", "cos" and "tan".
'''Trigonometry''' is the study of angles and [[triangle]]s, relying heavily on three basic functions: [[sine]], [[cosine]] and [[tangent]]. These functions are abbreviated as "sin", "cos" and "tan".
These functions are defined by reference to a "right triangle," which is a triangle in which one angle is 90 degrees.
These functions are defined by reference to a "right triangle," which is a triangle in which one angle is 90 degrees.