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5. An equilateral triangle has a side length of 7 cm. If a perpendicular is dropped from a corner, what is the length of the perpendicular? Give the exact value. 7√3 a) 73 c cm b) 7√3 cm c) cm d) √3 cm Dotorming the exact value of coc45° tan 30°

5. An equilateral triangle has a side length of 7 cm. If a perpendicular is dropped from a corner, what is the length of the perpendicular? Give the exact value. 7√3 a) 73 c cm b) 7√3 cm c) cm d) √3 cm Dotorming the exact value of coc45° tan 30°

Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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5. An equilateral triangle has a side length of 7 cm. If a perpendicular is dropped from a corner, what is the length of the perpendicular? Give the exact value. 7√3 a) 73 c cm b) 7√3 cm cm d) √3 cm tan30° 6. Determine the exact value of cos45° x sin60⁰* 2√2 3√2 a) 2v² b) 312 3 d) 3 7. For the angle 0 = 150° moving counter-clockwise in standard position, determine which primary trigonometric ratio is positive. a) sine b) cosine c) tangent d) none are positive 8. To 4 decimal places, sin18° = ? a) 0.0316 b) 0.0390 c) 0.3126 d) 0.3090 9. Determine the correct simplification of the expression (1 + cos0) (1 - cose). a) 1 - sin²0 b) sin²0 c) cos²0 d) 1 + cos²0
Transcribed Image Text:5. An equilateral triangle has a side length of 7 cm. If a perpendicular is dropped from a corner, what is the length of the perpendicular? Give the exact value. 7√3 a) 73 c cm b) 7√3 cm cm d) √3 cm tan30° 6. Determine the exact value of cos45° x sin60⁰* 2√2 3√2 a) 2v² b) 312 3 d) 3 7. For the angle 0 = 150° moving counter-clockwise in standard position, determine which primary trigonometric ratio is positive. a) sine b) cosine c) tangent d) none are positive 8. To 4 decimal places, sin18° = ? a) 0.0316 b) 0.0390 c) 0.3126 d) 0.3090 9. Determine the correct simplification of the expression (1 + cos0) (1 - cose). a) 1 - sin²0 b) sin²0 c) cos²0 d) 1 + cos²0
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