Chapter 8 By Jonathan Huddleston

8-1 Vocab.  Geometric Mean- The positive square root of the product of two positive numbers

8-1 Example Problems

8-2 Vocab.  Trigonometric Ratio – a ratio of two sides of a right triangle.  Sine – the ratio of the length of the leg opposite the angle to the length of the hypotenuse.  Cosine – the ratio of the length of the leg adjacent to the angle to the length of the hypotenuse.  Tangent – the ratio of the length of the leg opposite the angle to the length of the leg adjacent to the angle.

8-2 Example Problems

8-3 Example Problems

8-4 Vocab.  Angle of elevation – the angle formed by a horizontal line and a line of sight to a point above the line.  Angle of depression – the angle formed by a horizontal line and a line of sight to a point below the line.

8-4 Example Problems

8-5 Example Problems

8-6 Vocab.  Vector – a quantity that has both length and direction.  Component form – lists the horizontal and vertical change from the initial point to the terminal point of a vector.  Magnitude – the length of a vector  Direction – the angle that the vector makes with a horizontal line.  Equal vectors – vectors that have the same magnitude and the same direction.  Parallel vectors – two vectors that have the same direction or of they have opposite directions.  Resultant vector – the vector that represents the sum of two given vectors.

8-6 Example Problems

Quiz  1.  2.  3.

Answers  1.  2.  3.