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6.2 Right-Triangle Applications 439 18. 19. 20. 21. 22. Show that the perimeter of the pentagon in Example 6 is 20 sin 36°. Hint: In Figure 5, draw a perpendicular from O to AB. 23. In triangle OAB, lengths OA = OB = 6 in. and LAOB = 72°. Find AB. Hint: Draw a perpendicular from O to AB. Round the answer to one decimal place. 24. The radius of the circle in the following figure is 1 unit.

6.2 Right-Triangle Applications 439 18. 19. 20. 21. 22. Show that the perimeter of the pentagon in Example 6 is 20 sin 36°. Hint: In Figure 5, draw a perpendicular from O to AB. 23. In triangle OAB, lengths OA = OB = 6 in. and LAOB = 72°. Find AB. Hint: Draw a perpendicular from O to AB. Round the answer to one decimal place. 24. The radius of the circle in the following figure is 1 unit.

Mathematics For Machine Technology
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter39: Symbolism And Algebraic Expressions
Section: Chapter Questions
Problem 25A: For Exercises 23 through 34, round the answers to 1 decimal place. 25. All dimensions in Figure...
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Number 18. Find the area of the shaded region and the radius is 1

6.2 Right-Triangle Applications 439 18. 19. 20. 21. 22. Show that the perimeter of the pentagon in Example 6 is 20 sin 36°. Hint: In Figure 5, draw a perpendicular from O to AB. 23. In triangle OAB, lengths OA = OB = 6 in. and LAOB = 72°. Find AB. Hint: Draw a perpendicular from O to AB. Round the answer to one decimal place. 24. The radius of the circle in the following figure is 1 unit.
Transcribed Image Text:6.2 Right-Triangle Applications 439 18. 19. 20. 21. 22. Show that the perimeter of the pentagon in Example 6 is 20 sin 36°. Hint: In Figure 5, draw a perpendicular from O to AB. 23. In triangle OAB, lengths OA = OB = 6 in. and LAOB = 72°. Find AB. Hint: Draw a perpendicular from O to AB. Round the answer to one decimal place. 24. The radius of the circle in the following figure is 1 unit.
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