Presentation On Theme: Geometry: Chapter 9 95 Trigonometric Ratios Presentation Transcript:
1 GEOMETRY: Chapter 99.5 Trigonometric Ratios
2 Tangent RatioImage taken from: Geometry. McDougal Littell: Boston, P. 466.
3 Complementary AnglesIn the right triangle, angle A and angle B are complementary so you can use the same diagram to find the tangent of angle A and the tangent of angle B. Notice that the leg adjacent to angle A is the leg opposite angle B and the leg opposite angle A is the leg adjacent to angle B.Image taken from: Geometry. McDougal Littell: Boston, P. 467.
4 Ex. 1: Find tan D and tan F. Write each answer as a fraction and as a decimal rounded to four places.Images taken from: Geometry. McDougal Littell: Boston, P. 458.
5 Ex. 2: Find the value of x. Answer: 29.4Images taken from: Geometry. McDougal Littell: Boston, P. 467.
6 Ex. 3: Find the height of the flagpole to the nearest foot.Answer: 51 ftImages taken from: Geometry. McDougal Littell: Boston, P. 468.
7 Special Right TrianglesYou can find the tangent of an acute angle measuring 300, 450, or 600 by applying what you know about special right triangles.
8 Ex. 4Use a special right triangle to find the tangent of a 450 angle.Answer: tan 450=1
Mcdougal Littell Geometry Resource Book Answers
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