Unit 2
Vectors and Oblique Triangles

Unit Objective
Understand vectors and be able to combine them graphically and by adding their components. Find the components of a vector and be able to solve oblique triangles using the law of sines and cosines. This unit should take no more than 2 weeks to complete.

*All assignments are in Basic Technical Mathematics With Calculus 7th edition by Allyn J. Washington, 2000.

Method of Evaluation
The unit test will be a pencil and paper exam given at your class site. The test will be administered by the instructor or by a proctor. Please see the course schedule for the exact time and date of the unit test.

Objective One
Understand vectors, v, which have magnitude, |v|, and direction, theta. Be able to find the sum, difference, or scalar multiple of a vector graphically.

Objective Two
Given a vector, be able to find its components.

Objective Three
Find the resultant vector from its components.

Objective Four
Be able to work problems involving applications of vectors.

Objective Five
Use law of sines to find sides or angles in an oblique triangle.

Objective Six
Use law of cosines to find sides or angles in an oblique triangle.

  • Read 9.6, pages 268-271.
  • Complete Work Exercises, pages 271-272 #1, 5, 7, 11, 19, 22, 23, 26.
  • Quick Review sheet 2-6.


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Copyright 1996 by B. Chambers and P. Lowry. All Rights Reserved.