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Adjacent Side
The leg of a right triangle that is not opposite a given angle.
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Angle of Depression
The positive acute angle formed by a horizontal surface and a vector extending below it.
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Angle of Elevation
The positive acute angle formed by a horizontal surface and a vector extending above it.
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Hypotenuse
The side of a right triangle opposite the right angle.
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Opposite Side
The side of a right triangle opposite a given angle.
Formulas
| Cosecant |
Let A be an acute angle in Triangle ABC;
csc(A) =  |
| Cosine |
Let A be an acute angle in Triangle ABC;
cos(A) =  |
| Cotangent |
Let A be an acute angle in Triangle ABC;
cot(A) =  |
| Secant |
Let A be an acute angle in Triangle ABC;
sec(A) =  |
| Sine |
Let A be an acute angle in Triangle ABC;
sin(A) =  |
| Tangent |
Let A be an acute angle in Triangle ABC;
tan(A) =  |
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