Packet Unit 5 Trigonometry Honors Math 2 17
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1 Packet Unit 5 Trigonometry Honors Math 2 17 Homework Day 12 Part 1 Cumulative Review of this unit Show ALL work for the following problems! Use separate paper, if needed. 1) If AC = 34, AB = 16, find sin A, cos A, and tan A. C 2) Solve the triangle given m A = 24, b = 10, and m C = 90. A 60 B 3) A surveyor is measuring the distance across a small lake. He has set up his transit on one side of the lake 130 feet from a piling that is directly across from a pier on the other side of the lake. From his transit, the angle between the piling and the pier is 55. What is the distance between the piling and the pier to the nearest foot? Pier 4) A surveyor standing 55 meters from the base of a building measures the angle to the top of the building and finds it to be 37. How tall is the building? Transit Piling For #5-8, solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree. 5) m B = 47, m C = 100, b = 20 6) m B = 63, a = 12, c = 8
2 Packet Unit 5 Trigonometry Honors Math ) m A = 35, a = 10, b = 13. 8) a = 5, b = 7, c = 10 9) A building 240 feet tall casts a 30 foot long shadow. If a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree)? (Assume the person's eyes are 4 feet above ground level.) 10) Find the area of the triangle given m A = 48, b = 20 feet, c = 40 feet.
3 Packet Unit 5 Trigonometry Honors Math 2 19 Day 11 Homework Solve each of the following trigonometric equations.
4 Packet Unit 5 Trigonometry Honors Math 2 20 Solve each of the following trigonometric equations.
5 Packet Unit 5 Trigonometry Honors Math 2 21 Homework Day 9: Part I Homework Day 10: Part II I. Match each equation with the correct graph. A. cos x B. sin x C. cos x D. sin x E. tan x F. tan x II. Graph each of the following trigonometric functions over the interval shown
6 Packet Unit 5 Trigonometry Honors Math 2 22 Homework Day 9 Graph the following functions over two periods, one in the positive direction and one in the negative directions. Label the axes appropriately. 1. y = 3cos(x) Amplitude: Midline: 2. y = 4sin(x) Amplitude: Midline: 3. y = -2cos(x) Amplitude: Midline:
7 Packet Unit 5 Trigonometry Honors Math 2 23 Homework Day 10 For each function, find the amplitude, period, and midline then graph one cycle. Remember to label your axis! 1. y = 3cos(θ ) 2. y = -2sin(θ ) 3. y = 2cos(2θ ) y= sin(3θ ) - 2 Amp. = Amp. = Amp. = Amp. = Per. = Per. = Per. = Per. = Midline: Midline: Midline: Midline: Solve ABC given the following information. Show ALL work. Use separate paper, if needed. 5. m A = 40, m C = 23, and b = a = 15, b = 18, c = m A = 75, a = 51, and b = c = 49, b = 40, m A = 53
8 Packet Unit 5 Trigonometry Honors Math For the following graph, identify: Amplitude: 10. Jane has a 25 ft. ladder. If she leans it against a building, the angle of elevation is 65 degrees. How high up the building will the top of the ladder be? Period: Midline: 11. A dog chased a cat up a tree. The cat is 12 feet up the tree. The angle of depression from the cat to the dog is 32 degrees. How far is the dog from the tree? For y = a cos [ b (x c) ] + d, find: a = b = d = For problems #12-20, classify each triangle by its angles and sides
9 Packet Unit 5 Trigonometry Honors Math 2 25 Homework Day 12 Graph the following functions over two periods, one in the positive direction and one in the negative directions. Label the axes appropriately. 1. y = -3 cos (2x) Amplitude: 2. y = sin (4x) + 1 Amplitude: Midline: Period: Midline: Period: 3. y = 2 cos (1/3x) Amplitude: 4. y = -2sin (3x) - 1 Amplitude: Midline: Period: Midline: Period: For #5-8, match the function to graphs A-D shown below. 5. y = 3sin(2θ) 6. y = 3sin(1/2θ) 7. y = -3sin(1/2θ) 8. y = -3sin(2θ) A. B. C. D.
10 Packet Unit 5 Trigonometry Honors Math 2 26 Write the equation for the following trigonometric functions. 9. In physics class, Eva noticed the pattern shown in 10. the accompanying diagram on an oscilloscope Given the following information about a trig function, write an equation for each. 13. a sine function with amplitude = ½, period = 60, and a vertical shift 4 down 14. a cosine function with amplitude 7, period 540, a reflection over the x-axis, and vertical shift 1.5 up
11 Packet Unit 5 Trigonometry Honors Math 2 27 Homework Test Review 1. Find the remaining sides and angle in the following triangle. 2. Find the third side of the following triangle: 3. For the function y = cos(3x), find a. The amplitude. b. The period. c. The equation of the midline. d. Graph 1 period in the negative and positive directions. 4. A building 180 feet tall casts a 90 foot long shadow. If a person looks down from the top of the building, what is the measure of the angle of depression? (Assume the person s eyes are level with the top of the building.) 5. Solve the right triangle. Find sides and angles in degrees to at least 3 decimal places.
12 Packet Unit 5 Trigonometry Honors Math A person is standing 30 meters from a traffic light. If the angle of elevation from the person s feet to the top of the traffic light is 25 degrees, find the height of the traffic light. 8. Find all solutions to 2sin2x + 1 = 0 for 0 x From the top of a fence, a person sights a lion on the ground at an angle of depression of 24 degrees. If the man and the fence is 4.2 meters high, how far is the man from the lion? 10. Find the measure of angle A, to the nearest degree, if sin A = A ship leaves port at 1 pm traveling north at the speed of 30 miles/hour. At 3 pm, the ship adjusts its course on a bearing of N 20º E. How far is the ship from the port at 4 pm? 3 PM 20 Ship at 4 PM 12. Find the approximate value of tan 735. Port
13 Packet Unit 5 Trigonometry Honors Math Solve the right triangle. 14. Find the area of the triangle. If necessary, round the answer to two decimal places. 15. In the diagram below, find the approximate value of each part labeled with a variable. Show all work. 16. Classify each triangle by its sides and its angles:
14 Packet Unit 5 Trigonometry Honors Math Given y = 3 sin(2x) a. Find the midline. b. Find the amplitude. c. Find the period. d. Graph one cycle Solve the following trigonometric equations. 18. sinx cosx tanx + sinx cosx = cosx (cosx + ½ ) = cosx + 1 = Find sin (15) and cos (75). Why is there something special about their values? Solve the following triangles. Round angles to the nearest degree and sides to the tenths place. 22. a = 30, b = 40, A = a = 3, b = 9, c = 8
Packet Unit 5 Right Triangles Honors Common Core Math 2 1
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