Chapter 8 Test Review

Use your calculator to evaluate each of the trigonometric functions below. Round your answer to the nearest tenth. 12. Tan 78" 10, Sin 54 11. Cos 390 13. If Sin x = 0.527, what does x equal? Find the value of x. Round your answers to the nearest tenth. Show all of your work. 14. 32" 17. Kurt spots a bird sitting at the top of a 40 foot tall telephone pole. If the angle of elevation from the ground where he is standing to the bird is 59, how far is Kurt standing from the base of the pole? 18. A helicopter flying 1,600 feet above the ground spots an airplane flying above. Ifthe horizontal distance between the helicopter and airplane is 3,055 feet and the angle of elevation is 710, find the airplane's altitude