# scalene

## Related Articles

- coÂ·seÂ·cant. // American Heritage Student Science Dictionary;2009, p85
A definition of the term "cosecant" is presented. It refers to the ratio of the length of the hypotenuse in a right triangle to the length of the side opposite an acute angle. It is the inverse of the sine.

- coÂ·sine. // American Heritage Student Science Dictionary;2009, p85
A definition of the term "cosine" is presented. It refers to the ratio of the length of the side adjacent to an acute angle of a right triangle to the length of the hypotenuse.

- coÂ·tanÂ·gent. // American Heritage Student Science Dictionary;2009, p85
A definition of the term "cotangent" is presented. It refers to the ratio of the length of the adjacent side of an acute angle in a right triangle to the length of the opposite side. It is the inverse of a tangent.

- hyÂ·potÂ·eÂ·nuse. // American Heritage Student Science Dictionary;2009, p175
A definition of the term "hypotenuse" is presented. The term refers to the side of a right triangle opposite the right angle. It is the longest side, and the square of its length is equal to the sum of the squares of the lengths of the other two sides.

- right triangle. // American Heritage Student Science Dictionary;2009, p296
A definition for the term "right triangle" is presented. It refers to a triangle having a right angle.

- sine. // American Heritage Student Science Dictionary;2009, p310
A definition of the term "sine" is presented. It refers to the ratio of the length of the side opposite an acute angle in a right triangle to the length of the hypotenuse.

- Generalised Trigonometry. Simons, Stuart // Mathematical Spectrum;2011/2012, Vol. 44 Issue 3, p102
A comprehensive treatment is developed of how trigonometry becomes modified when the right angle present in the basic triangle of conventional trigonometry is replaced by some other constant (but arbitrary) angle Ïƒ. The relationship between this generalised trigonometry and the conventional...

- PHI OH PHI OH PHI... Griffiths, Jonny // Mathematics Teaching;Sep2005, Issue 192, p36
Presents a mathematical solutions to the problems illustrated Jonny Griffiths. Illustration of the scale of enlargement of similar triangles; Geometric progression of the perimeters of the angles change to &#x D;; Formulation of equation base on Pythagorean theorem.

- diÂ·heÂ·dral. // American Heritage Student Science Dictionary;2009, p98
A definition of the term "dihedral" is presented. It refers to an object formed by a pair of planes or sections of planes that intersect: a dihedral angle.