Problem 1QC: What is the radian measure of a 270 angle? What is the degree measure of a 5/4-rad angle? Problem 2QC: Evaluate cos (11/6) and sin (5/4). Problem 3QC: Use sin2+cos2=1 to prove that 1+cot2=csc2. Problem 4QC: Explain why sin1(sin0)=0, but sin1(sin2)2. Problem 5QC: Evaluate sec11 and tan11. Problem 1E: Define the six trigonometric functions in terms of the sides of a right triangle. Problem 2E: For the given angle corresponding to the point P(4, 3) in the figure, evaluate sin , cos , tan ,... Problem 3E: A projectile is launched at an angle of above the horizontal with an initial speed of v ft/s and... Problem 4E: A boat approaches a 50-ft-high lighthouse whose base is at sea level. Let d be the distance between... Problem 5E: How is the radian measure of an angle determined? Problem 6E: Explain what is meant by the period of a trigonometric function. What are the periods of the six... Problem 7E: What are the three Pythagorean identities for the trigonometric functions? Problem 8E: Given that sin=1/5 and =2/5, use trigonometric identities to find the values of tan , cot , sec ,... Problem 9E: Solve the equation sin = 1, for 0 2. Problem 10E: Solve the equation sin 2=1, for 02. Problem 11E: Where is the tangent function undefined? Problem 12E: What is the domain of the secant function? Problem 13E: Explain why the domain of the sine function must be restricted in order to define its inverse... Problem 14E: Why do the values of cos1 x lie in the interval [0, ]? Problem 15E: Evaluate cos1(cos(5/4)). Problem 16E: Evaluate sin1(sin(11/6)). Problem 17E: The function tan x is undefined at x = /2. How does this fact appear in the graph of y = tan1 x? Problem 18E: State the domain and range of sec1 x. Problem 19E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 20E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 21E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 22E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 23E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 24E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 25E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 26E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 27E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 28E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 29E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 30E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 31E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 32E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 33E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 34E: Evaluating trigonometric functions Without using a calculator, evaluate the following expressions or... Problem 35E: Solving trigonometric equations Solve the following equations. 37. tan x = 1 Problem 36E: Solving trigonometric equations Solve the following equations. 38. 2 cos + = 0 Problem 37E: Solving trigonometric equations Solve the following equations. 39. sin2=14,02 Problem 38E: Solving trigonometric equations Solve the following equations. 40. cos2=12,02 Problem 39E: Solving trigonometric equations Solve the following equations. 41. 2sinx1=0 Problem 40E: Solving trigonometric equations Solve the following equations. 44. sin2 1 = 0 Problem 41E: Solving trigonometric equations Solve the following equations. 44. sin cos = 0, 0 2 Problem 42E: Solving trigonometric equations Solve the following equations. 42. sin3x=22,0x2 Problem 43E: Solving trigonometric equations Solve the following equations. 43. cos 3x = sin 3x, 0 x 2 Problem 44E: Solving trigonometric equations Solve the following equations. 46. tan2 2 = 1, 0 Problem 45E: Solving trigonometric equations Solve the following equations. 45. sin2=15,02 Problem 46E: Solving trigonometric equations Solve the following equations. 46. cos3=37,0 Problem 47E: Projectile range A projectile is launched from the ground at an angle above the horizontal with an... Problem 48E: Projectile range A projectile is launched from the ground at an angle above the horizontal with an... Problem 49E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 50E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 51E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 52E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 53E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 54E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 55E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 56E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 57E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 58E: Inverse sines and cosines Without using a calculator, evaluate the following expressions or state... Problem 59E: Using right triangles Use a right-triangle sketch to complete the following exercises. 59.Suppose... Problem 60E: Using right triangles Use a right-triangle sketch to complete the following exercises. 60.Suppose... Problem 61E: Right-triangle relationships Draw a right triangle to simplify the given expressions. Assume x 0.... Problem 62E: Right-triangle relationships Draw a right triangle to simplify the given expressions. Assume x 0.... Problem 63E: Right-triangle relationships Draw a right triangle to simplify the given expressions. Assume x 0.... Problem 64E: Right-triangle relationships Draw a right triangle to simplify the given expressions. Assume x 0.... Problem 65E: Right-triangle relationships Draw a right triangle to simplify the given expressions. Assume x 0.... Problem 66E: Right-triangle relationships Draw a right triangle to simplify the given expressions. Assume x 0.... Problem 67E: Trigonometric identities 29. Prove that sec=1cos. Problem 68E: Trigonometric identities 30. Prove that tan=sincos. Problem 69E: Trigonometric identities 31. Prove that tan2 + 1 = sec2 . Problem 70E: Trigonometric identities 32. Prove that sincsc+cossec=1. Problem 71E: Trigonometric identities 33. Prove that sec (/2 ) = csc . Problem 72E: Trigonometric identities 34. Prove that sec (x + ) = sec x. Problem 73E: Identities Prove the following identities. 73. cos1x+cos1(x)= Problem 74E Problem 75E: Evaluating inverse trigonometric functions Without using a calculator, evaluate or simplify the... Problem 76E Problem 77E: Evaluating inverse trigonometric functions Without using a calculator, evaluate or simplify the... Problem 78E Problem 79E Problem 80E: Evaluating inverse trigonometric functions Without using a calculator, evaluate or simplify the... Problem 81E: Evaluating inverse trigonometric functions Without using a calculator, evaluate or simplify the... Problem 82E Problem 83E: Right-triangle relationships Use a right triangle to simplify the given expressions. Assume x 0.... Problem 84E: Right-triangle relationships Use a right triangle to simplify the given expressions. Assume x 0.... Problem 85E: Right-triangle relationships Use a right triangle to simplify the given expressions. Assume x 0.... Problem 86E: Right-triangle relationships Use a right triangle to simplify the given expressions. Assume x 0.... Problem 87E: Right-triangle relationships Use a right triangle to simplify the given expressions. Assume x 0.... Problem 88E Problem 89E: Right-triangle pictures Express in terms of x using the inverse sine, inverse tangent, and inverse... Problem 90E: Right-triangle pictures Express in terms of x using the inverse sine, inverse tangent, and inverse... Problem 91E: Explain why or why not Determine whether the following statements are true and give an explanation... Problem 92E: One function gives all six Given the following information about one trigonometric function,... Problem 93E: One function gives all six Given the following information about one trigonometric function,... Problem 94E: One function gives all six Given the following information about one trigonometric function,... Problem 95E: One function gives all six Given the following information about one trigonometric function,... Problem 96E Problem 97E: Amplitude and period Identify the amplitude and period of the following functions. 89. g() = 3 cos... Problem 98E Problem 99E: Amplitude and period Identify the amplitude and period of the following functions. 91. q(x) = 3.6... Problem 100E: Law of cosines Use the figure to prove the law of cosines (which is a generalization of the... Problem 101E: Little-known fact The shortest day of the year occurs on the winter solstice (near December 21) and... Problem 102E: Anchored sailboats A sailboat named Ditl is anchored 200 feet north and 300 feet east of an observer... Problem 103E: Area of a circular sector Prove that the area of a sector of a circle of radius r associated with a... Problem 104E: Graphing sine and cosine functions Beginning with the graphs of y = sin x or y = cos x, use shifting... Problem 105E: Graphing sine and cosine functions Beginning with the graphs of y = sin x or y = cos x, use shifting... Problem 106E: Graphing sine and cosine functions Beginning with the graphs of y = sin x or y = cos x, use shifting... Problem 107E: Graphing sine and cosine functions Beginning with the graphs of y = sin x or y = cos x, use shifting... Problem 108E Problem 109E: Designer functions Design a sine function with the given properties. 97. It has a period of 24 hr... Problem 110E: Field goal attempt Near the end of the 1950 Rose Bowl football game between the University of... Problem 111E: A surprising result The Earth is approximately circular in cross section, with a circumference at... Problem 112E: Daylight function for 40 N Verify that the function D(t)=2.8sin(2365(t81))+12 has the following... Problem 113E: Block on a spring A light block hangs at rest from the end of a spring when it is pulled down 10 cm... Problem 114E: Viewing angles An auditorium with a flat floor has a large flat-panel television on one wall. The... Problem 115E: Ladders Two ladders of length a lean against opposite walls of an alley with their feet touching... Problem 116E: Pole in a corner A pole of length L is carried horizontally around a corner where a 3-ft-wide... format_list_bulleted