Date Name LESSON Practice B 13-1 Right-Angle Trigonometry Find the value of the sine, cosine, and tangent functions for 0. 3. 36 123 2. 1 . 27 120 39 15 60 36 48 Use a trigonometric function to find the value of x. 6. 7V2 4. 5. 450 60 22 30 Find the values of the six trigonometric functions for 0. 9. 40 7. 0 26 21 41 24 28 Solve. 10. A water slide is 26 feet high. The angle between the slide and the water is 33.5. What is the length of the slide? 11. A surveyor stands 150 feet from the base of a viaduct and measures the angle of elevation to be 46.20. His eye level is 6 feet above the ground. What is the height of the viaduct to the nearest foot? 12. The pilot of a helicopter measures the angle of depression to a landing spot to be 18.80. If the pilot's altitude is 1640 meters, what is the horizontal distance to the landing spot to the nearest meter? Copyright @ by Holt, Rinehart and Winston. All rights reserved. 4 Holt Algebra 2