Section 12.2: Problem Solving with Right Triangles
In real world situations we often discuss the angle of elevation and depression. The angle of elevation and depressionis used often in word problems, especially those involving a persons line of sight as they look up at an object. These angles can be used to solve problems involving trigonometric functions such as sine, cosine, and tangent, and theinverse trigonometric functions.
Using the standard formula for the area of a triangle, we can derive a formula for using sine to calculate the area of a triangle. Using sine to calculate the area of a triangle means that we can find the area knowing only the measures of two sides and an angle of the triangle. There is no need to know the height of the triangle, only how to calculate using thesine function.
Using the standard formula for the area of a triangle, we can derive a formula for using sine to calculate the area of a triangle. Using sine to calculate the area of a triangle means that we can find the area knowing only the measures of two sides and an angle of the triangle. There is no need to know the height of the triangle, only how to calculate using thesine function.
Notes and Powerpoints
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