Solving Right Triangles
Terms and Formulae
Adjacent Side
-
The leg of a right triangle that is not opposite a given angle.
Angle of Depression
-
The positive acute angle formed by a horizontal surface and a
vector extending below it.
Angle of Elevation
-
The positive acute angle formed by a horizontal surface and a
vector extending above it.
Hypotenuse
-
The side of a right triangle opposite the right angle.
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) = 
|
