Geo Ch. 9 McDougel Littel
A set of three positive integers a, b, and c that satisfy the equation c2=a2+b2
Special Right Triangles
Right triabgles whose angle measures are 45, -45, -90, or 30, -60, -90
A ratio of the lengths of two sides of a right triangle
A trigonometric ratio, abbreviated as sin.
A trigonometric ratio, abbreviated as cos.
A trigonometric ratio, abbreviated as tan.
Angle of Elevation
When you stand and look up at a point in the distance, the angle that your line of sight makes with a line drawn horizontally
Solve a Right Triangle
Determine the measurements of all sides and angles of a right triangle
Magnitude of a Vector
The distance from the initial point to the terminal point of a vector
Direction of a Vector
Determined by the angle that the vector makes with a horizontal line
Two vectors that have the same magnitude and direction
Two vectors that have the same or opposite directions
Sum of Two Vectors
The sum of u=<a1,b1> and v=<a2,b2> is u+v=<a1+a2, b1+b2>