Warm-Up Write the sin, cos, and tan of angle A. A BC 15 21 28.

Warm-Up

• Write the sin, cos, and tan of angle A.A

Geometry 8-3

Solving Right Triangles

Finding Corresponding AnglesUse the trigonometric ratio to determine which angle of the triangle is A.

Another ExampleUse the given trigonometric ratio to determine which angle of the triangle is A.

Inverse Trig RatiosIf you know the sine, cosine, or tangent of an acute angle measure, you can use the inverse trigonometric functions to find the measure of the angle.

Examples

• Find each inverse.A. cos-1(0.87) B. sin-1(0.85) C. tan-1(0.71)

20D. cos-1(A)

Using Inverses

• Find each missing measure.

Warm-Up Write the sin, cos, and tan of angle A. A BC 15 21 28.

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Transcript of Warm-Up Write the sin, cos, and tan of angle A. A BC 15 21 28.

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sin sin sin tan cos cos cos 2 2 2 ... - Utah State Universitycse.usu.edu/foraffiliates/2007/posters_07/FADS Industry Day Poster... · Utah State University 4130 Old Main Hill Logan,