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NAME DATE 10-6 PERIOD Practice Trigonometric Ratios Find the values of the three trigonometric ratios for angle A. 1. 2. # 15 97 72 $ " # 36 $ " 36 15 36 sin A = − , cos A = − , tan A = − 65 72 , tan A = 65 sin A = − , cos A = − − 97 97 72 15 39 39 Use a calculator to find the value of each trigonometric ratio to the nearest ten-thousandth. 3. tan 26° 0.4877 4. sin 53° 0.7986 5. cos 81° 0.1564 Solve each right triangle. Round each side length to the nearest tenth. 6. 7. $ # 22 67° 29° # 9 " ∠B = 23°, AB = 23.9, AC = 9.3 Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. " $ ∠A = 61°, AB = 10.3, BC = 5.0 Find m∠J for each right triangle to the nearest degree. 8. - 11 9. + + - 5 12 18 , , 24° 42° # 10. SURVEYING If point A is 54 feet from the tree, and the angle between the ground at point A and the top of the tree is 25°, find the height h of the tree. h 25° 25.2 ft Chapter 10 " 40 54 ft $ Glencoe Algebra 1