17. [-11 Points] I DETAILS I MCKTRIGS 2.1.049. For the expression that follows, replace x with 30 and then simplify as much as possible. 3 sin 2x S 18. [-11 Points] DETAILS MCKTRIGS 2.1.055. Find the exact value. csc 60 C 19. [-11 Points] DETAILS MCKTRIGB 2.1.056. Find the exact value. sec 60 Z Need Help? _ 20. [-/1 Points] | DETAILS I MCKTRIGS 2.2.043. Use a calculator to find the following. Round your answer to four places past the decimal point csc 13.75 21. [-11 Points] DETAILS MCKTRIGS 2.2.041. Use a calculator to find the following. Round your answer to four places past the decimal point sec 47.9 Need Help? 22. [-11 Points] DETAILS MCKTRIGB 2.2.059. Find 6 if 6 is between 0 and 90. Round your answer to the nearest tenth of a degree. sin 6 = 0.9814 0 23. [-11 Points] DETAILS MCKTRIGS 2.2.062. Find 6 if 6 is between 0 and 90. Round your answer to the nearest tenth of a degree. sec 6' = 6.0201 0 24. [-/1 Points] DETAILS MCKTRIG8 2.2.065. MY NOTES ASK YOUR TEACHER Find 0 if 0 is between 0 and 90. Round your answer to the nearest tenth of a degree. cot 0 = 0.6821 Need Help? Watch It 25. [-/3 Points] DETAILS MCKTRIG8 2.3.023. MY NOTES ASK YOUR TEACHER This problem refers to right triangle ABC with C = 90. Solve for all the missing parts using the given information. (Round your answers to the nearest whole number.) A = 210, c = 22 m B = a m m 26. [-/3 Points] DETAILS MCKTRIG8 2.3.025. MY NOTES ASK YOUR TEACHER This problem refers to right triangle ABC with C = 90. Solve for all the missing parts using the given information. (Round your answers to one decimal place.) A = 34.80, a = 43.1 inches B = in b in27. [-I3 Points] DETAILS MCKTRIGB 2.3.035. MY NOTES ASK YOUR TEACHER | PRACTICE ANOTHER This problem refers to right triangle ABC with C = 90. Solve for all the missing parts using the given information. (Round your answers to the nearest whole number.) a = 33 ft, [7 = 84 ft A: 8: 5: ft 28. [l2 Points] DETAILS MCKTRIG8 2.4.013. MY NOTES ASK YOUR TEACHER | PRACTICE ANOTHER Solve the following problem. Be sure to make a diagram of the situation with all the given information labeled. The two equal sides of an isosceles triangle are each 31 centimeters. If the base measures 36 centimeters, nd the height h and the measure of the two equal angles 9. (Round your answers to the nearest whole number.) h: cm 9: Need Help? 29. [-11 Points] MCKTRIGB 2.4.015. ASK YOUR TEACHER PRACTICE ANOTHER Solve the following problem. Be sure to make a diagram of the situation with all the given information labeled. The height of a right circular cone is 22.7 centimeters. If the diameter of the base is 10.6 centimeters, what angle 6' does the side of the cone make with the base (see the gure below)? (Round your answer to one decimal place.) 0 = 7 22.7 cm i! ' ' 10.6 cm Need Help? 30. [/1 Points] DETAILS MCKTRIG8 2.4.021 . MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Solve the following problem. Be sure to make a diagram of the situation with all the given information labeled. If a 71.0-foot flagpole casts a shadow 52.0 feet long, what is the angle of elevation of the sun (to the nearest tenth of a degree)? 0 Need Help? _ 31. [/1 Points] DETAILS LARPCALC11 4.3.063. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You are skiing down a mountain with a vertical height of 1100 feet. The distance from the top of the mountain to the base is 2200 feet. What is the angle of elevation from the base to the top of the mountain? 0 Need Help? 32. [-/1 Points] DETAILS LARPCALC11 4.3.064. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A biologist wants to know the width w of a river to properly set instruments for an experiment. From point A, the biologist walks downstream 100 meters and sights to point C (see figure). From this sighting, it is determined that 0 = 48. Al*100 ft-1 How wide is the river (in m)? (Round your answer to one decimal place.) m