Geometry
... (These apply when the lines cut by the transversal are parallel.) Postulate 15: If parallel lines are cut by a transversal, then pairs of corresponding angles are ...
... (These apply when the lines cut by the transversal are parallel.) Postulate 15: If parallel lines are cut by a transversal, then pairs of corresponding angles are ...
angle of rotation
... An angle of rotation is formed by rotating the terminal side and keeping the initial side in place. If the terminal side is rotated counterclockwise, the angle of rotation is positive. If the terminal side is rotated clockwise, the angle of rotation is negative. The terminal side can be rotated more ...
... An angle of rotation is formed by rotating the terminal side and keeping the initial side in place. If the terminal side is rotated counterclockwise, the angle of rotation is positive. If the terminal side is rotated clockwise, the angle of rotation is negative. The terminal side can be rotated more ...
geometry notes
... Since any isosceles right triangle must have angles of 45°- 45°- 90° it will be similar to this triangle and will therefore have sides in the same fixed ratio. This leads us to the following theorem: The sides of any isosceles right triangle are in the fixed ratio of 1 : 1 : 2 . That is, in any iso ...
... Since any isosceles right triangle must have angles of 45°- 45°- 90° it will be similar to this triangle and will therefore have sides in the same fixed ratio. This leads us to the following theorem: The sides of any isosceles right triangle are in the fixed ratio of 1 : 1 : 2 . That is, in any iso ...
FOUNDATIONS OF ALGEBRA
... Summarize the structure and relationship between undefined terms, defined terms, axioms/postulates, methods of reasoning and theorems. Explain the relationships among angles formed by perpendicular lines and transversals of parallel lines. Use paper-folding techniques, compasses and straight edges a ...
... Summarize the structure and relationship between undefined terms, defined terms, axioms/postulates, methods of reasoning and theorems. Explain the relationships among angles formed by perpendicular lines and transversals of parallel lines. Use paper-folding techniques, compasses and straight edges a ...
Show all work on a separate sheet of work paper
... For problems 14 – 21, using the given information in the drawing, find the values of x and y. ...
... For problems 14 – 21, using the given information in the drawing, find the values of x and y. ...
Trigonometric functions
In mathematics, the trigonometric functions (also called the circular functions) are functions of an angle. They relate the angles of a triangle to the lengths of its sides. Trigonometric functions are important in the study of triangles and modeling periodic phenomena, among many other applications.The most familiar trigonometric functions are the sine, cosine, and tangent. In the context of the standard unit circle (a circle with radius 1 unit), where a triangle is formed by a ray originating at the origin and making some angle with the x-axis, the sine of the angle gives the length of the y-component (the opposite to the angle or the rise) of the triangle, the cosine gives the length of the x-component (the adjacent of the angle or the run), and the tangent function gives the slope (y-component divided by the x-component). More precise definitions are detailed below. Trigonometric functions are commonly defined as ratios of two sides of a right triangle containing the angle, and can equivalently be defined as the lengths of various line segments from a unit circle. More modern definitions express them as infinite series or as solutions of certain differential equations, allowing their extension to arbitrary positive and negative values and even to complex numbers.Trigonometric functions have a wide range of uses including computing unknown lengths and angles in triangles (often right triangles). In this use, trigonometric functions are used, for instance, in navigation, engineering, and physics. A common use in elementary physics is resolving a vector into Cartesian coordinates. The sine and cosine functions are also commonly used to model periodic function phenomena such as sound and light waves, the position and velocity of harmonic oscillators, sunlight intensity and day length, and average temperature variations through the year.In modern usage, there are six basic trigonometric functions, tabulated here with equations that relate them to one another. Especially with the last four, these relations are often taken as the definitions of those functions, but one can define them equally well geometrically, or by other means, and then derive these relations.