Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN: 9781337614085
Author: Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher: Cengage,
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Question
**Directions:** Classify the triangle with the given side lengths as acute, right, obtuse, or not a triangle. 1. **8.** 11, 13, 25 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse 2. **9.** 9, 15, 19 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse 3. **10.** 21, 28, 35 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse 4. **11.** 8, 12, 14 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse **12. Define each of the following:** - a. sin A = ____sine____ - b. cos A = ____cosine____ - c. tan A = ____tangent____ **13. Write the ratio for the sine, cosine, and tangent of angle A. Give your answer as a fraction in lowest terms.** - a. find BC = __________ - b. sin A = __________ - c. cos A = __________ - d. tan A = __________ **Diagram:** - A right triangle is depicted with: - Angle A on the left. - Side AB = 16. - Side AC = 20.
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Transcribed Image Text:**Directions:** Classify the triangle with the given side lengths as acute, right, obtuse, or not a triangle. 1. **8.** 11, 13, 25 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse 2. **9.** 9, 15, 19 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse 3. **10.** 21, 28, 35 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse 4. **11.** 8, 12, 14 - [ ] Not a Δ - [ ] Acute - [ ] Right - [ ] Obtuse **12. Define each of the following:** - a. sin A = ____sine____ - b. cos A = ____cosine____ - c. tan A = ____tangent____ **13. Write the ratio for the sine, cosine, and tangent of angle A. Give your answer as a fraction in lowest terms.** - a. find BC = __________ - b. sin A = __________ - c. cos A = __________ - d. tan A = __________ **Diagram:** - A right triangle is depicted with: - Angle A on the left. - Side AB = 16. - Side AC = 20.
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