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8.8: Trigonometry Word Problems

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

Angle of Depression

The angle of depression is the angle formed by a horizontal line and the line of sight down to an object when the image of an object is located beneath the horizontal line.

Angle of Elevation

The angle of elevation is the angle formed by a horizontal line and the line of sight up to an object when the image of an object is located above the horizontal line.

ASA

ASA, angle-side-angle, refers to two known angles in a triangle with one known side between the known angles.

law of cosines

The law of cosines is a rule relating the sides of a triangle to the cosine of one of its angles. The law of cosines states that c^2=a^2+b^2-2ab\cos C, where C is the angle across from side c.

law of sines

The law of sines is a rule applied to triangles stating that the ratio of the sine of an angle to the side opposite that angle is equal to the ratio of the sine of another angle in the triangle to the side opposite that angle.

Tangent

The tangent of an angle in a right triangle is a value found by dividing the length of the side opposite the given angle by the length of the side adjacent to the given angle.

Trigonometric Ratios

Ratios that help us to understand the relationships between sides and angles of right triangles.

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Difficulty Level:
At Grade
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Date Created:
Jul 17, 2012
Last Modified:
Aug 02, 2016
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MAT.GEO.659.L.2