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Using angles of elevation and depression to find heights and distances.
Some Applications of Trigonometry
Use alternate angles to turn an angle of depression into an angle of elevation, then find the height of a building, the width of a river and the distance between two cars seen from a height.
Some Applications of Trigonometry
Solve heights and distances problems with two angles of elevation: a flagstaff on a building, a shadow that lengthens as the sun sinks, an observer walking towards a tower and a statue on a pedestal.
Some Applications of Trigonometry
Worked solutions to all 15 questions of NCERT Class 10 Exercise 9.1 on heights and distances, with exact surd answers, decimal checks and scale drawings of the elevation and depression problems.
Some Applications of Trigonometry
Learn what the line of sight, angle of elevation and angle of depression mean, why the last two are equal, and how one right triangle and one angle give the height of a tower, a ladder, a chimney or a kite.