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geometry
morphew chapter 8
10
Mathematics
10th Grade
02/18/2009

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Term
angle of depression
Definition
An angle formed by a horizontal line and the line of sight to an object below the level of the horizontal.
Term
angle of elevation
Definition
An angle formed by a horizontal line and the line of sight to an object above the level of the horizontal.
Term
Cosine
Definition
For an acute angle of a right triangle, this is the ratio comparing the adjacent leg and hypotenuse
Term
Geometric mean
Definition
For any numbers a and b, the positive number x such that a/x = x/b
Term
Pythagorean theorem
Definition
In a right triangle, the sum of the squares of the legs equals the sum of the square of the hypotenuse.
Term
Pythagorean triple
Definition
A set of numbers a, b, and c, that satisfy the pythagorean equation (a^2 + b^2= c^2)
Term
Sine
Definition
For an acute angle of a right triangle, the ratio of the opposite leg and the hypotenuse
Term
Tangent
Definition
For an acute angle of a right triangle, the ratio of the opposite leg and the adjacent leg
Term
Trigonometric ratio
Definition
A ratio of the measures of two sides of a right triangle
Term
Trigonometry
Definition
The study of the properties of triangles and trigonometric functions and their applications
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