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Cot, sec and csc

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Trigonometry index
Cot, sec and csc diagram
These trigonometric functions are the reciprocals of the sine, cosine and tangent.
Angle α

Cot α
Sec α
Csc α
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The inverse trigonometric functions are frequently used in many fields. However, they are usually not referred to explicitly, but rather as "1/" sin, cos or tan.
As elsewhere on CalcTool, the angle may be input in any of a range of units, as chosen by use of the menu.