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Ch. 8 Vocab Geometry
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Gravity
Terms in this set (18)
geometric mean
between two numbers is the positive square root of their product
Pythagorean triple
Set of 3 nonzero whole numbers a, b, and c that satisfy the Pythagorean Theorem
ordered triple
a set of three numbers of the form (x,y,z) that represents a point in space
trigonometry
the study of the properties of triangles and trigonometric functions and their applications
trigonometric ratio
A ratio of the lengths of two sides in a right triangle.
sine
ratio of the measure of the leg opposite the acute angle to the measure of the hypotenuse
cosine
ratio of the adjacent side to the hypotenuse of a right-angled triangle
tangent
ratio of the opposite to the adjacent side of a right-angled triangle
inverse sine
The inverse function of sine
inverse cosine
The inverse function of cosine
inverse tangent
The inverse function of tangent
cosecant
the reciprocal of the sine of an angle in a right triangle
secant
Any line that intersects a circle in exactly two points
cotangent
the ratio of the adjacent to the opposite side of the right triangle
angle of elevation
the angle formed by a horizontal line and the line of sight to an object above the horizontal line
angle of depression
The angle formed by a horizontal line and the line of sight to an object below the horizontal line
Law of Sines
sinA/a = sinB/b = sinC/c
Law of Cosines
a²=b²+c²-2bcCosA
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