## At A Glance

### Trig: Word Problems - Sine, Cosine & Tangent

http://www.mindbites.com/lesson/5121-trig-word-problems-sine-cosine-tangent-305 This 78 minute trigonometry lesson is an opportunity to see how the skills learned in Lesson 300 Basic Trigonometry Part I are used to solving word problems using the 3 primary trig ratios, sin, cos and tan. You find unknown sides and angles in right angle triangles to solve word problems that involve: - a kite on the end of a string, diagonal of a rectangle, support wires, shadows, ladders, trees, buildings, stairways and more - angle of elevation and angle of depression - rise & run Sample problem: An airplane is flying over a forest at an altitude of 1600 ft. when the pilot sights a fire. He measures the angle of depression and finds it to be 46 degrees. How far is the fire, to the nearest tenth of a ft. from a point on land directly below the airplane? This lesson contains explanations of the concepts and 17 example questions with step by step solutions plus 3 interactive review questions with solutions. The following lesson will help you with the fundamentals of this lesson: - 300 Basic Trigonometry Part I (http://www.mindbites.com/lesson/5125)
Length: 04:09

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