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Chapter 10 Vocabulary Quiz #2 Review
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Gravity
Terms in this set (13)
Distance Formula - .
The distance d between any two points with coordinates (x₁,y₁) and (x₂,y₂) is
given by the formula: d = √(x₂-x₁)²+(y₂-y₁)²
Midpoint
The point halfway between the endpoints of a segment.
Midpoint Formula
The midpoint M of a line segment with endpoints at (x₁,y₁) and (x₂,y₂) is given by M=((x₁+x₂)÷2,((y₁+y₂)÷2).
Similar Triangles
Triangles having the same shape but not necessarily the same size.
Cosine
For an acute angle of a right triangle, the ratio of the measure of the leg adjacent to the acute angle to the measure of the hypotenuse.
Sine
For an acute angle of a right triangle, the ratio of the measure of the leg opposite the acute angle to the measure of the hypotenuse.
Tangent
For an acute angle of a right triangle, the ratio of the measure of the leg opposite the acute angle to the measure of the leg adjacent to the acute angle.
Trigonometric Ratio
A ratio of a length of sides of a right triangle.
Trigonometry
The study of the properties of triangles and trigonometric functions and their applications.
Solving the Triangle
Finding the measures of all of the angles and sides of a triangles.
Inverse Cosine
When angle A is an acute angle and the cosine of A is x, then the inverse of a is the measure of angle A.
Inverse Sine
When angle A is an acute angle and the sine of A is x, then the inverse of a is the measure of angle A.
Inverse Tangent
When angle A is an acute angle and the tangent of A is x, then the inverse of a is the measure of angle A.
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