# Trigonometry

1. Maths(trigonometry)
In a circle of diameter 40cm,length of chord is 20 cm. Find the length of minor arc of the chord.
2. Evaluation Algebra and trigonometry
Evaluate log base10 raised to the power of 350+log base10 raised to the power of 105-log base10 raised to the power of 84
3. Maths trigonometry
Prove that cosec A_cotA by cosecA+Costa + cosecA+ Cot A by cosecA_cotA=2 cosec squareA_1=2Ã—1+cos squares by1_cos squareA
4. trigonometry
How do I find the vertical asymptotes for y=-2tan⁡((3x+180°)+3) without graphing?
5. trigonometry
Are my answers correct?
6. trigonometry
1. In 2001, Windsor, Ontario received its maximum amount of sunlight, 15.28 hrs, on June 21, and its least amount of sunlight, 9.08 hrs, on December 21. On what day(s) can Windsor expect 13.5 hours of sunlight? I determined the equation for this is D(h) = 3.1cos[360/365(h – ...
7. Trigonometry
A dancer completes 3.2 revolutions in a pirouette. What is her angular displacement?
8. Trigonometry
What is the value of tan (Arc cos 15 seventeenths)? 1. 8/15 2. 8/17 3. 15/8 4. 17/8 Can you guys explain what the Arc means?
9. Trigonometry
Given that sin(2/(√229))and that 0∘0∘ < θθ < 90∘90∘, with the aid of a diagram and without the use of a calculator determine: a) cosθcos⁡θ = b) tanθtan⁡θ = c) tanθ÷cscθtan⁡θ÷csc⁡θ = d) sinθ÷cosθsin⁡θ÷cos⁡θ = e) tanθ secθtan⁡θ ...
10. Math (Trigonometry)
sin(5x)/sin(4x) = ? How do I cancel them out to get a constant?
11. Trigonometry
Write 4 other points for (-3,11π/3) on -2π ≤ θ < 2π
12. Trigonometry
1. Convert r= 2/1+sinθ to cartesian 2. Convert y=3 to polar 3. Convert 3x^2+3y^2-6x=0 to polar
13. trigonometry
Point P (8, -4) is on the terminal arm of angle theta What quadrant would this be in? Cosine?
14. Maths
Solve for following applying spherical trigonometry... 1.Papua New Guinea (37° 45'N, 122°27'W)(since course was 260°) distance travelled =2250nm. A) use law of cosine to calculate a and thus altitude:or B) use law of sine to calculate N and thus longitude: or C) use law of...
15. Trigonometry
The base of a trapezoid are 397.62 and 254.15 respectively, the angles that the sides make with the longer base are 68°39.2' and 72°6.0'. Find the sides and the diagonal. Need help with this pls.
16. Trigonometry
I need to solve the rest of the triangle A=126.5 a=17.2 c=13.5 Using the Law of Sines we get a/sinA = c/sin C 17.2/sin126.5 = 13.5/sinc I am confused on what to do next
17. Trigonometry
Theta = x Question: Given angle x, where 0degrees <= x <= 360 degrees, solve for x to the nearest degree. b) sin(x + 20degrees) = 0.2045 c) tan(90degrees - 2x) = 1.6443 I am confused as to where 148 degrees comes from in question b and how there are 4 possibilities in ...
18. Trigonometry
Write in standard form: -2y^2+x-4y+1=0
19. Trigonometry
A scientist has 37 grams of a radioactive substance that decays exponentially. Assuming k=-0.3,how many grams of radioactive substance remain after 9 days.
20. Inverse trigonometry
Prove that- tan^-1(1/2tan 2A)+tan^-1(cotA)+tan^-1(cot^3A) ={0,ifpi/4<A<pi/2 {pi,0<A<pi/4 Where 2 small curly brackets are 1 big curly bracket
21. Inverse trigonometry
Solve the equation tan^-1(under rootx^2+x)+sin^-1(under rootx^2+x+1)=pi/2 Where tan^-1 inverse of tan
22. Trigonometry
Find all degree solutions. (Enter your answers as a comma-separated list. Let k be any integer.) 2 cos2 6θ + 3 cos 6θ + 1 = 0
23. Trigonometry
Write the following as an algebraic expression in u, u>0. cos(arctan(u/sqrt2))
24. Math: Trigonometry
Sec^2(u/2)=(2sec(u))/(sec(u)+1)
25. trigonometry
In another attempt to determine the height of the flagpole, a metre stick was placed vertically beside the flagpole. When the flagpole’s shadow was 36.72 m long, the metre stick’s shadow was 3.06 m long. Find the height of the flagpole.
26. Trigonometry
In another attempt to determine the height of the flagpole, a metre stick was placed vertically beside the flagpole. When the flagpole’s shadow was 36.72 m long, the metre stick’s shadow was 3.06 m long. Find the height of the flagpole.
27. Trigonometry
Prove cot u - cot 2u=cosec 2u?
28. Math - Trigonometry
In order to prevent confusion that may be caused by reading this problem written through keyboard text, I have written the identity in microsoft paint here: gyazo. com/3afe07a6067e467d3776dd8b64ccac91 I need to find three different ways (Different meaning beginning each proof ...
29. Math: Trigonometry/Geometry
Carlos is planning to build a grain bin with a radius of 15 ft. he reads that the recommended slant of the roof is 25 degrees. He wants the roof to over hang the edge of the bin by 1ft. What should the length of X be? Give answer in Feet and Inches....Explain
30. Trigonometry
A pilot wants to maintain a course of 40° and a ground speed of 300 mph against a 45 mph wind from 20° west of north. What should his heading be?
31. Trigonometry
The function in the graph has the general equation f(x)=asin(bx+c)+d. Which of the following values are correct? Select all that apply d=-3 C=-1 B=0.5 B=0.5 D=1 A=2 B=2
32. Trigonometry
a small blimp has an air speed of 24km/h on a heading of 42°. The wind's speed is 9 km/h and its direction is 312°. Find the ground speed and drift angle of the blimp.
33. Trigonometry
An airplane is traveling at 650 mph on a heading of 255°. The wind is blowing from a bearing of 320° at 28 mph. What is the ground speed and the actual bearing of the airplane? P.S. I prefer the law of cosine/sine method
34. Trigonometry
An airplane with a speed of 485 km/h is traveling with a heading of 83.5°. The wind velocity is 38 km/h in the direction of 191°. Find the ground speed of the airplane. P.S. How do you solve this problem by only using the law of cosine/sine method?
35. Trigonometry
A person can swim at a speed of 2 kilometers per hour in still water. If he heads across a river at right angles to current of 5 kilometers per hour, find his speed in relation to the land and the direction in which he actually moves.
36. Trigonometry
An airplane is headed southwest (bearing 225°) with an air speed of 550 miles per hour, with the wind blowing from the northwest (bearing 135°) at a speed of 110 miles per hour. Find the drift angle, ground speed, and the course of the airplane.
37. Trigonometry
An airplane is headed on a bearing of 140° with an air speed of 500 miles per hour. The course has a bearing of 128°. The ground speed is 580 miles per hour. Find the drift angle, the wind direction, and the wind speed.
38. Math
The trigonometry practice exam has 6 questions with the answer A 8 questions with the answer Baby 10 questions with the answer C and 9 questions with the answer D The number of different answer keys that can be created with the letters above is A. 2.27 × 10^17 B. 3.82 × 10^...
39. Trigonometry
The number of hours of daylight in a city in the northern hemisphere shows periodic behavior over time. - The average number of daylight hours is 12 - The maximum number of daylight hours is 14.4 - The period is 365 days - The day with the least sunlight is december 20 which ...
40. Maths trigonometry
2sinA+5cosA=4. Prove that cosA=1/2
41. Trigonometry
Someone please help me!!! I think I've found the correct formula for this but I don't understand exactly why this is a sine function and how to find the days of the year when Portland has 11 and 15 hours of daylight. PLEASE HELP!! The equation I got was: D = 4 sin(2π t / 365...
42. Trigonometry
Someone please help me!!! I think I've found the correct formula for this but I don't understand exactly why this is a sine function and how to find the days of the year when Portland has 11 and 15 hours of daylight. PLEASE HELP!! The equation I got was: D = 4 sin(2π t / 365...
43. Trigonometry
a 10ft ladder is resting against the wall. the ladder touches the ground 6ft away from the wall. what angle, rounded to the nearest tenth, id the bottom of the ladder making with the ground The correct answer is 53.1 degrees Can someone explain how to get this?
44. Trigonometry
Find the distance from the ladder to the base of the slide, marked with an x in the diagram. Give your answer accurate to one decimal place. The height of the right angle triangle is 4 m, the hypotenuse is 7 m and the missing variable is on the bottom marked with an x. I used ...
45. Math - Trigonometry
Solve for x, correct to one decimal place. It`s a right angle triangle. The height for the triangle is 4 cm with a 48° angle. The bottom of the triangle is an x. I got the answer 3.3 cm, is this correct? Any help would be appreciated. Thanks!
46. Trigonometry
Can someone please explain this to me?? I'm really stuck on it. First of all, i don't know if I should use cosine or sine for the function because it only says to make a sinusoidal function that models the data, and a sinusoidal function could be either sine or cosine. PLEASE ...
47. Trigonometry
If sin(a)=x and a∈(π/2,π), find a formula for the following in terms of x: a.) cos(a) b.) cos(3π/2+a) c.) tan(π+a)
48. Trigonometry
In triangle XYZ, XZ=6, ZX=7, and XY=8, find (sinY+sinZ)/sinX.
49. Trigonometry
Can someone please help me explain in words how to what each piece of the equation modifies the whole thing in this: f(x)=-3csc(2x)+1
50. trigonometry
A mountain peak C is 4130 ft. Above sea level, and from C the angle of elevation of a second peak B is 5.0°. An aviator at A directly over peak C finds that angle CAB is 43.8° when his altimeter shows that he is 8460 ft. Above sea level. Find the height of peak B.
51. trigonometry
hello fellas ... please help me with this,a farmer cooperator in an agricultural research wishes to fence the field in the form of right triangle. if one angle is 30° and the hypotenuse is 100m. find the cost of the fencing of the field if each meter of fencing materials ...
52. math (trigonometry)
A ferris wheel has a diameter of 100m and the bottom of the wheel is 4m above the ground. It rotates two times every 10 minutes. Using this information, complete each question. c) Determine the angular velocity of the Ferris wheel in radians/second d)How far (in meters) has ...
53. Math trigonometry
a rope dancer was walking on a loose roop tied to the top of two equal post of height 9m. when he was 3m above the ground, it was found that stretched pieces of roop made angle of 30 degree and 60 degree with the horizontal line parallel to the ground. find the length of the rope
54. Trigonometry
a rope dancer was walking on a loose roop tied to the top of two equal post of height 9m. when he was 3m above the ground, it was found that stretched pieces of roop made angle of 30 degree and 60 degree with the horizontal line parallel to the ground. find the length of the rope
55. Trigonometry
I'm supposed to find the angle reference for a degree of 0. I think the answer is 180 degrees. Is that correct?
56. Math
I am a little confused with this trigonometry question. It says that sin0=O. I understand that because It says sin it means quadrant 1 and 2. The possible answers are 0, 90, 180, and 270. I know 270 is not correct but the others are confusing me. Angles 0, 90, and 270 lie on ...
57. trigonometry
what is the length of the line segment whose endpoints are (2,3) and (6, -7)
58. Trigonometry
Given that cot x = 5/ sqrt 11 find csc x A - 5/6 B - 6/5 C - sqrt11/ 6 D - 6/ sqrt11
59. trigonometry
Julia drives 10km due west of her home. then she heads 15 km south. what is the total distance that she has travelled from his house?
60. maths applications of trigonometry
if an object is observed with an angle of elevation 60 degrees from a point at a distance of 60m, so find the height of object from the ground
61. trigonometry
find the number of radians in the central angle that subtends an arc of 6m on a circle of diameter 5m
62. trigonometry
If a locomotive wheel with a diameter of 15 meters rolls 11.25 meters,through how many degrees and minutes does it turns?
63. maths
Trigonometry write tan in terms of cosec
64. Trigonometry
In an explosion, a piece of debris is tossed 99 meters N 45 W. what is the displacement in the north and west directions. I'm not really sure what it wants when it asks for displacement so I also don't know how to get it.
65. Trigonometry
Solution set of sin 2x = -1/2 in [0,2pi)
66. Trigonometry
Thank you for the respond!! I appreciate it. But it says on my paper 360 rev/min = 360 (2pi/60) rad/s = 12pi rad/s and so D= 2r = 2(s/theta) = 2(40/12pi) ft = 20/3pi ft = 2.12 ft should be the answer :( I have 2 more if that's alright. A point on the rim of a turbine wheel of ...
67. Trigonometry
Find the diameter of a pulley which is driven at 360 rpm by a belt moving at 40 ft/s. Then in 1 s the pulley turns through an angle theta measuring 12 pi radians and a point on the rim travels a distance s= 40 ft.
68. trigonometry
determine the distance between the ladder and the house when its angle of elevation is 63.5 degree and the length of the ladder is 20 ft?
69. Trigonometry
I'm having trouble doing trigonometry. Determine the possible coordinates of a terminal point for each angle in standard position. A) 315° I have no clue how to do this. Please explain and show me the work so I can do the rest of the questions myself
70. History
Which accurately describes one of Sir Isaac Newton’s advancements in astronomy? using a barometer, Newton was able to prove Copernicus heliocentric theory using trigonometry, Newton was able to calculate the size of our solar system newton invented the reflecting telescope, ...
71. trigonometry
A rock dropped from the top of the Learning Tower of Pisa falls to a point 14 feet from its base. If the tower is 182 feet tall, at what angle does it lean at the ground?
72. math (trigonometry)
if tan A/2 =cosecA-sin A then prove cos^2 A/2=cos 36 degree
73. Trigonometry
a boy standing 70m away from a flag–post observes that the angles of elevation of the top and bottom of the tower on top the flag–post are 70^ and 69^ respectively. Find the height of the tower
74. math (trigonometry)
A=170 degree then prove that Tan A/2=-1-rot(1+Tan^2 A)/Tan A
75. Trigonometry
Sketch the graph of the function (Include two full periods. Find one complete cycle. Show your work. y=-3+5cos πt/12
76. Trigonometry
Sketch the graph of the function (Include two full periods. Find one complete cycle. Show your work. y=sin4x
77. Trigonometry
Sketch the graph of the function (Include two full periods. Find one complete cycle. y=10cos πx/6
78. Trigonometry
Two students are passing a ball back and forth, allowing it to bounce once between them. If one students bounce passes the ball from a height of 1.4 m and it bounces 3 m away from the students, where should the second student stand to catch the ball at a height of 1.2 m? ...
79. math
Could anyone give me the List of équations in trigonometry chapter that needs to je remmembered
80. trigonometry
FROM THE SKYDOME IN SM NORTH WHICH DIRECTLY ACROSS THE STREET, THE ANGLE OF ELEVATION OF TRINOMA IS 57°20' AND THE ANGLE OF DEPRESSION OF THE BASE IS 18°10'. IF THE BUILDING ARE 105 METERS APART, WHAT IS THE HEIGHT OF THE BUILDING?
81. trigonometry
FROM THE SKYDOME IN SM NORTH WHICH DIRECTLY ACROSS THE STREET, THE ANGLE OF ELEVATION OF TRINOMA IS 57°20' AND THE ANGLE OF DEPRESSION OF THE BASE IS 18°10'. IF THE BUILDING ARE 105 METERS APART, WHAT IS THE HEIGHT OF THE BUILDING?
82. trigonometry
A man standing 9m above the ground,observes the angle of elevation and depression of the top and bottom of Rizal monument in luneta as 6° 50' and 7° 30' respectively find the height of the monument
83. Math
You need adobe flash player to access the link. The learn alberta username is LA57 and password is 2149. Go to T4T courses, put grade 11 then math. Then the resources show up. Click 20-1 learn everywhere. I need help on the Mars Rover Simulation questions. 7. a. Find the ...
84. Trigonometry
Given that sin^2x = 4/13, what is the cos^2x? I am so lost. I need to show my work. Please help. THANK YOU!
85. Trigonometry half angles
Tan75/2 ka solution dena sir lekin vistar se
86. trigonometry(height and distance)
The shadow of a tower when the angle of elevation of the sun is 45 degree is found to be 5m longer when it is 60 degree. Find the height of the tower.
87. trigonometry(opt math)
From the roof and basement of a house 20m high,the angle of elevation of the top of a tower are 45 and 60 degres respectively. Find the height of the tower. (Ans=81.97m)
88. trigonometry(height and distance)
The shadow of a tower when the angle of elevation of the sun is 45 degree is found to be 5m longer when it is 60 degree. Find the height of the tower.
89. trigonometry
If A + B + C = π, prove that: ( sin2A + sin2B + sin2C ) / ( sinA + sinB + sinC ) = 8 sin(A/2) sin(B/2) sin(C/2)
90. Math Trigonometry
Point P(k, 24) is 25 units from the origin. If P lies on the terminal arm of an angle in standard position, determine the measures of the angle(s)
91. Trigonometry
I'm having trouble figuring this out. An airplane has an airspeed of 160 mph. It is to make a flight in a direction of 80° while there's a 20 mph wind from 310°. What will the airplane's actual heading be? I'd appreciate any help especially on how you determined what angles ...
92. Trigonometry
I'm having trouble figuring this out. An airplane has an airspeed of 160 mph. It is to make a flight in a direction of 80° while there's a 20 mph wind from 310°. What will the airplane's actual heading be? I'd appreciate any help especially on how you determined what angles ...
93. trigonometry
Filiz is walking at a bearing of 300°. When she has traveled 20 meters, how far west from her starting point is she? Round to the nearest tenth
94. Math trigonometry
8sin^2theta+10 sin theta cos theta =3cos^2 theta=0 then general solution for theta is
95. trigonometry
Angle A is in standard position and terminates in quadrant IV. If sec(A) = 4 3 , complete the steps to find cot(A).
96. trigonometry - maths
The difference between the two acute angles of a right angled triangle is 2pie /5 radians . Express the angle of the triangle in degree and grade .
97. math trigonometry
two straight roads intersect to form an angle of 75 degree. find the shortest distance from one road to a gas station on the other road 1000 m from the junction.
98. Trigonometry
sinα/1+ cosα is equals to.....
99. trigonometry
A ship started sailing 42.58 degrees west of south at the rate of 5 kph. after 2 hours, ship B started at the same port going 46.33 degrees west of north at the rate of 7 kph. after how many hours will the second ship be exactly north of ship A?
100. trigonometry
a triangle has sides equal to 68 cm, 77 cm and 75 cm, respectively. find the area of the escribed circle tangent to the shortest side of the triangle.
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