Trig check my work please?

89,916 results, page 97

  1. Trig

    The diameter of the wheels on your car (including the tires) is 25 inches. You are going to drive 305 miles today. Each of your wheels is going to turn by an angle of how many degrees.
  2. TRIG

    Solve this equation on the interval 0 θ < 2π. Round your answer(s) to two decimal places. 2 sin θ + 3 = 2 (smaller value) (larger value)
  3. trig

    Find the indicated trigonometric function, given that è is an angle in standard position with the terminal side passing through the given point. 2) (15, 20); Find csc è. A) 5/3 B) 3/4 C) 5/4 D) 4/3
  4. trig

    y= sin x/2, 0 less than equal to x less than equal to 4pi... the question says state the amplitude and period for each equation and graph it over the indicated interval
  5. Trig

    A 12-foot ladder reaches 9 ft 6 in up a wall. How far up would a 20-foot ladder reach when placed at the same angle? Write the answer in feet with inches.
  6. trig

    To the nearest degree, all of the following angles are solutions of the equation 2sin x + 4 cos 2x =3 except: (1) 40 degrees (2) 150 degrees (3) 166 degrees (4) 194 degrees
  7. trig

    if 5cos A plus 3=0 and 180<A<360..without using a calculator and with the aid of a diagram,determine the value of 1.1 sinA plus cosA 1.2 tanA *sinA
  8. Math - Trig

    The equation y = 20sin(0.5θ - 2) + 40 models the monthly temp for a certain city. Use the equation to predict the temperature in the city during December. Thanks
  9. trig

    The angle of depression of the top and bottom of a tower as seen from the top of a 100m high cliff are 30degree and 60degree respectively. find the height of the tower
  10. trig

    A pilot is flying at 10,000 feet and wants to take the plane up to 20,000 feet over the next 50 miles. What should be his angle of elevation to the nearest tenth?
  11. Pre-Calc/Trig...

    A ball is thrown upward with an initial velocity of 4ft/sec from a height of ten feet. what is the maximum height that the ball will reach. h(t)= -16+vt+s
  12. Trig

    A playground slide starts 107cm above the ground and is 250cm long. What angle does the slide make with the ground? Give the answer to the nearest degree.
  13. Trig

    Solve, algebraically or with justification (no graphing calculator solutions allowed), the following equation: tan⁡7x-sin⁡6x=cos⁡4x-cot⁡7x
  14. Math Trig

    use a double-angle formula to find the exact value of cos2u when sinu=5/13 , where pi/2<u<pi So far I went cos2u=1-sin^2 =1-2(25/169) =1-(50/169)
  15. English

    Songpyeon is a traditional Korean food. Koreans usually eat it on Chuseok, the Korean Thanksgiving Day. Songpyeon is made with rice, chestnut paste, and sesame seeds or beans. It is tasty.Therefore, we Koreans like this food very much. (Would you check the passage? Please ...
  16. Chemistry(Please check)

    I need to calculate the valueof Kc for 5 test tubes for an experiment that I completed on determination of Kc. The equation used was Fe^3+ + SCN^-= FeSCN^2+ After creating an ice table for the first test tube my values for Fe and SCN were 6.5e-4M and for FeSCN I got 5.7e-5M. ...
  17. Physics-can someone please check this

    John is fired horizontally from a cannon with the speed of 24.5 m/s. In 3.0 seconds he strikes the earth down range. A net will be located on the ground to catch him. a) what is his initial position above the ground? b) What is the horizontal range to put the net? a)+ upward ...
  18. Physics :D

    An electric motor is tested and found 76% efficient. if the input work is 400 J, what is the motors output work? A ramp has a length of 4m and a height of 1.5m. If a man pushes a 40N crate to the top of the ramp with a force of 60N, what is the efficiency of the ramp? How do I...
  19. Physics

    A block of mass 2.50 kg is pushed 2.40 m along a frictionless horizontal table by a constant 10.0 N force directed 25.0° below the horizontal. (a) Determine the work done by the applied force. J (b) Determine the work done by the normal force exerted by the table. J (c) ...
  20. Algebra

    I have a few questions that I need help with. Solve the radical equation, and check all proposed solutions. 5. x- square root 3x-2=4 I don't understand this problem. Solve and check the equation. 10. (x^2+14x+49)^3/4-20=7 would I have to multiply each number by 4/3? Solve the ...
  21. trig

    sinx = 4/5 and x terminates in Quadrant II Find sin2x and cos2x How to get the answers, which are sin2x = -24/25, cos2x = -7/25?
  22. trig

    If a, b are the solutions of the equation log base 3 (5-2x)+ log base 3 (5+2x)=2 find the value of the product ab.
  23. trig

    how do i get the degree for (tan+1)(tanx-2)=0 in the interval of 0 is less that or equal to x and x is less then or equal to 360
  24. Trig problems

    Part 1) Evaluate tan 7.5 Part 2) Evaluate exactly cos (-(45pi(4)))
  25. trig

    Find all solutions of the equation: 2 cosx + sqrt2 = 0 A) x = ð/4 + 2nð or x = 7ð/4 + 2nð B) x = 3ð/4 + 2nð or x = 5ð/4 + 2nð C) x = ð/4 + nð or x = 7ð/4 + nð D) x = 3ð/4 + nð or x = 5ð/4 + nð
  26. trig

    verify the identity: sec(beta)+ tan (beta)= cos(beta)/ 1-sin(beta)
  27. trig

    {tan^2x+cotx divided by tanx-cotx} is equal to {1 divided by sin^2x-cos^2x}
  28. Trig

    Sin theta = 4/5 i got 53.1 as an answer but on my answer sheet is also has 126.9 How do i get that 126.9?
  29. trig

    how do i set this problem up? Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = -1/2, with t in quadrant 4.
  30. trig

    If sec(4 = csc(6 ) and Theta is an angle in radian measure determine m angle theta
  31. Trig

    Solve for 0≤x≤2π ---> (2√2)cos²(x)-(√2-2)cos(x)-1=0 much thanks .
  32. trig

    the shadow of a tower is 2y meters longer at 30 degree than when it was at 45 degree. find the height of the tower
  33. Math/Trig

    Solve: 2 sin x - 1 = 0 for 0 degrees is less than or equal to x is less than 360 degrees.
  34. Trig

    Solve: cos2x(2cosx+1) for 0degrees is less than or equal to x is equal to or less than 360degrees
  35. trig

    Determine the value of cos(theta) given that cos(pi − theta) = .2 (A) p.96 (B) .2 (C) −.2 (D) −p.96 (E) None of the above.
  36. trig

    Given Tangent theta = -5 on 4 and cos theta >0, find sine theta and sec theta
  37. mth, trig

    Given cos a=-7/25 in quadrant II , and sin b=-12/13, in quadrant IV , find cos(a+b) and sin2a
  38. trig

    find the angle between vector U=<2,3> and V=<1,-5> answers: 88 degrees, 45 degrees, 135 degrees, or 92 degrees...?
  39. Calc- Trig Substitution

    integral of dx/square root(x^2-64) My answer is: ln (x/8 + square root(x^2-64)/8) +c is this right?
  40. Trig

    Verify the identity. (secx + tanx)/(secx - tanx) = (1 + 2sinx + sin(^2)x)/cos(^2)x
  41. trig

    Choose the expression that is equivalent to the given expression. sin 6x tan 3x I got 2 sin^2 3x
  42. Inverse Trig

    Using -pi/2 ≤ y ≤ pi/2, what are the following solutions? y=arcsin root3/2 y=arcsin 1/2
  43. trig

    Establish the following identity: CosA/1-TanA + SinA/1-CotA = CosA-SinA
  44. Trig

    A jet is 115 mi east and 88.3 i north of Niagara Falls. What is its displacement from Niagara Falls?
  45. Trig

    Solve each equation for the given domain. cos^2 theta + cos theta - 1 = 0 for 0-180.
  46. Trig

    Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, find Sin(A-B).
  47. Trig

    Solve equation for 0 less than or equal to theta less than 360. 3-1/5*tan(theta)=16/5
  48. Check a chemistry answer

    So I think I have done this problem right, I was just wondering if anyone would check over it for me. What mass (in grams) of P2O5 contains 1.20 x 1023 atoms of phosphorus? 1.20E23 atoms of P x (1 mol/ 6.022E23 atoms) x (5 mol O/ 2 mol P) x (1 mol P2O5/ 5 mol O) x (79.995g/ 1 ...
  49. HISTORY- Check my answer!

    Check my answer and if it is not right, what is it?: How did China become a communist nation? The communists were elected. The communists gained control after a long civil war. The communists gained control in a swift coup d’état. The emperor appointed a communist prime ...
  50. Maths

    If z=(x^n) f(x/y), where f is an arbitrary function, show that: x(partial z/partial x) + y (partial z / partial y) = nz Can someone please show me how to work it out? Thanks!
  51. Math - logarithmic equation

    Solve the logarithmic equation. Please show all of your work. Loga(x+3) + loga(x-3) = 3
  52. English, Business English, Communications

    I revised this memo to approve the you-attitude. Can someone tell me if I did it correctly? If I didn't what did I do wrong. I worked on this for 3 hours! Subject: Status of Building Renovations We are happy to announce that the renovation of the lobby is not behind schedule. ...
  53. Language Arts

    Paragraph 4: Into this environment stepped a very determined woman. Frances Gabe hated housework. She said, "Housework is a thankless, unending job, a nerve-tangling bore. Who wants it? Nobody! With my jaw set hard, I was determined there had to be a better way!" Setting her ...
  54. chemistry

    I am trying to work out the abbreviated structure formula of the products of the complete hydrolysis of tocainde together with any new functional groups formed. I am somewhat stuck and have got only as far as identifying the functional groups in tocaine. please can you help
  55. physics

    The nucleus of a copper atom contains 29 protons and has a radius of 4.8*10^-15m. How much work (in electron volts) is done by the electric force as a proton is brought from infinity, where it is at rest, to the "surface" of a copper nucleus? I really got no clue to do it. Can...

    A fair coin is tossed ten times in a row. What is the probability that "heads" comes up at least eight times? I got an answer of 7/128, but I lost the paper with the work I showed. Can someone refresh my memory please?
  57. social study

    Hi everyon I need help with my home work pls help me. I have to write aboot surfing competition. Like I am a reporter and I have to write artical about that. where and when, who won and how, what happend to looser and what kind of outfit surffer wear ( discribe). Please help ...
  58. physics

    anyone who knows the answer to this question please show your work. drwls i know i posted this queestion before but you didn't reply to my comment. Your friend has climbed a tree to a height of 6.00 m. You throw a ball vertically up to her and it is traveling at 5.00 m/s when ...
  59. algbera

    In solving the equation (x + 3)(x + 1) = 48, Eric stated that the solution would be x + 3 = 48 => x = 45 or (x + 1) = 48 => x = 47 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to ...
  60. math

    In solving the equation (x + 4)(x – 7) = -18, Eric stated that the solution would be x + 4 = -18 => x = -22 or (x – 7) = -18 => x = -11 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help ...
  61. algebra

    1. In solving the equation (x + 3)(x + 1) = 48, Eric stated that the solution would be x + 3 = 48 => x = 45 or (x + 1) = 48 => x = 47 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to...
  62. Algebra

    In solving the equation (x + 3)(x + 1) = 48, Eric stated that the solution would be x + 3 = 48 => x = 45 or (x + 1) = 48 => x = 47 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to ...
  63. math

    dave has a rabbit, a ferret,a gerbil and a turtle. He feeds them in a different order each day. In how many different orders can dave feed his pets. Make an organized list to solve each problem. Write each answer in a complete sentence show work please
  64. physics

    Only two forces act on an object (mass = 4.00 kg), as in the drawing. Find the magnitude and direction (relative to the x axis) of the acceleration of the object. Ftotal=Sqrt(60^2+40^2)=72.11(N) Angle=tan-1(60/40)= 56.3° (How did you get 56.3°) a= F/m=72.11/4=18(m/s/s) The ...
  65. college algebra

    1. for the given slope-inntercept equation of the line with the following properties parallel to the line y=7; containing the (-3,5) 2. write the equation of the circle in standard form. find the center, radius, intercepts. x^2+y^2+16x-18y+145=25 please show work
  66. chemistry

    Something that will lower the freezing point of water to -3.7 degrees Celsius if one mole were placed in 1000 grams of water? To solve this I know I have to use the equation Tf= IKfm, Tf= 3.7, but how I go about the problem there if I don't know Kf or the the mole of solute (...
  67. Math

    Raquel's pay stub has three deductions. What is the total amount of deductions? Round to nearest cent. Gross Pay(wages) is $1625.35 Medicare is $22.48 Social Security is $52.72 Federal Withholding Income Tax (23%) Please show me how to work do this problem?
  68. Chemistry

    The molar enthalpy of combustion of demand is -6.78KJ/mol.What mass of decane would have to be burned in order to raise the temperature of 500ml of water from 20 degrees Celsius to 55 degrees celsius. I tried using ndeltaH=mcdeltat. But it didn't work. Please help
  69. Calculus

    The tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. The tank shown is a hemisphere with r = 5 ft. The water is to be pumped out at the top. First I solved for ri, ri / (5 - xi) = 5 / 5 ri = 5 - xi Vi...
  70. English

    Can you please help me rephrase a poem by Whitman or at least check if my sentences are correct? 1)We were holding each other tightly without ever leaving each other (??) 2) We enjoyed going up and down, making excursions, being powerful (??) 3) We streched our elbows and held...
  71. thermochemistry

    what is the enthalpy change in kilojoules for the combustion of 1 mol of ethanol, C2H5OH (l), to form gaseous carbon dioxide and gaseous water? use bond energies to calculate your answer. (hint: there is a double bond in carbon dioxide and oxygen) the answer is supposed to be...
  72. English

    Thank you very much. By the way, what do you think of our Comenius project? Do you think we did a good job? I still have a few setences on phrasal verbs I'd like you to check. (especially the reprhase of 1) 1) I can't understand the various meanings of "bring on". For example...
  73. Language Arts

    This question asks about your work in your reading character role. You may use your novel to help you answer the question. Think about the work you completed in your reading character role. Determine the ideas that would be most worthy to share in a literary discussion about ...
  74. Physics

    Which motor performs more work in the same amount of time- a 10 kW or a 20 kW motor? Explain your reasoning. Power masures work per unit time and kW is a way of measuring it. That should make the correct answer obvious.
  75. calculus (gr 12)

    the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10...
  76. algebra

    a survey of 2,000 people was given to find their mode of transportation to work each day. the pie chart gives the results of people surveyed Bike 3.8% taxi 9.8% walk 3.4% bus 14.6% drive 68.4% how many traveled by bike to work?
  77. PHYSICS work on a ramp!!!

    How much work is it to push a box (mass 190 kg) up an incline (angle 16 degrees with the horizontal) that is 8.3 meters long, if the coefficient of kinetic friction between the box and the incline is 0.6? My doubt is how do I find force?
  78. English

    Assignment: Type impressions, feelings, and thoughts in a one-page diary entry. Recall your earliest experiences with art. What did you do? Did you enjoy art? Why? How did your parents or teacher respond to your art? How do you feel at present about your artistic development...
  79. trig

    It's in sigma notation, so I'm not sure how to type it. I'll just use E lol. Find each sum. 6 E (n+1)/(n+2) n=1 Is this a geometric or arithmetic series? That is pretty much all I really need to know. I appreciate all the help you guys give.
  80. trig

    Two sides of triangle CDE are 9 and 4, as shown. Write an equation in standard form for the line CD. Leave values as radicals. There is a picture of a triangle that passes through point (4,0) The answer is 65^1/2x + 4y = 4(65^1/2) But, I don't understand how to do this problem.
  81. trig

    Hi I need to solve this question for x, where 0<x<2pi. The question is 2cos^2 x + cos x =1. Then it asks me to wrtie a general solution for it. I really don't understand how to do any of this. I just started this unit and I'm finding it so difficult. Any help would be so...
  82. Trig

    How do I prove the following Identity? sec x(sec x-cos x)=tan^2x If there is a certain website or suggestion to help with these type of equations I would greatly appreciate it. I've been studying these for a while but still get pretty confused.
  83. trig

    Alan is using the equation mg sin A = umg cos A to determine the coefficient of friction, u, between a flat rock and a metal ramp. Find u to the nearest hundredth, if the rock begins to slide at 19º.
  84. Maths Trig

    A 60m long bridge has an opening in the middle and both sides open up to let boats pass underneath. The two parts of the bridge floor rise up to a height of 18 m. Through what angle do they move?
  85. math order from least to greatest

    can you check my work i need order least to greatest 6 problems. 1) 0.2222 1/5 0.02 i got: 0.2 0.2222 0.02 2) 1.1111 1 1/10 1.101 i got: 1.1 1.101 1.1111 3) 6/5 1 5/6 1.3333 i got: 1.2 1.3333 1.83333 4) 4.333 9/2 43/7 i got: 4.3333 4 3/7 9/2 5) 0.1333 2/75 1.3 i got: 0.1333 0....
  86. logic

    What would be the standard form of the following sentence? "The only road to success is hard work" First I had "All roads to success are hard work." Now I'm thinking that that's wrong because "roads" is plural and I'm talking about "THE road." So now I'm thinking: "All things ...
  87. math show work please

    1/(X+3)+4/(x+5)= 2/(x^2+8x+15) a. the solution set is b. the solution set is all real numbers c. the solution set is empty
  88. English

    Thank you very much, Writeacher. Can you check these descriptions of pictures I need to prepare for tomorrow, too. 1) Some workers are at a self-service restaurant (I think it is a sort of canteen in their own firm) and they are choosing their meals from a counter (what is ...
  89. chemistry

    how do i calculate %of arsenic and oygen by mass and chem composition of the oxide that has been formed 0.702 sample of arsenicheated, material in boat, oxide of arsenic with mass of 0.927g please help %As = [(mass As)/mass oxide]x100=?? %O = [(mass O)/mass oxide]x100=?? From ...
  90. Grammar and Composition

    please check my answers: match each of the words in the first column with an antonym in the second column. 1. gruff _f?_ 2. semblance _a_ 3. relentless _h?_ 4. prelude _j_ 5. liability _b?_ 6. barbarous _d_ 7. inadequate _c_ 8. dadlock _e_ 9. brazen _g_ 10. arduous _i_ a. ...
  91. English

    I can't find any synonyms for the words I need to rephrase. Can you check them, please? 1) He thought there should be sea-police upon the Haerwich-Holland ranges since that sea stretch was constantly overrun by pirates 2) He was expert in dabbling in exchanges He was such a ...
  92. Astronomy

    Which of the following distance measuring techniques works to measure distances to other galaxies beyond the Milky Way? CHECK ALL THAT APPLY A) Hubble's Law B) main sequence stars C) Cepheid variable stars D) parallax E) radar ranging F) galaxy rotation G) white dwarf ...
  93. English

    Could you please check these sentences, too? Thank you very much. 1) The witches were associated with the devil. 2) Once you told me I could use this sentence. The daffodils are described not statically as in a painting but alive with motion. 3) He shows the daffodils as part ...
  94. Grammar

    Please check. 3. Our apartment is downtown; theirs is uptown. 4. "Then," the witness continued, "we heard someone yell" 'Who's in there?' 5. Could you find the article "Gulliver's Travels Revisited" in our library? 6. Sheila asked, "Is Chapter 3 of Winter Tales called 'Up the ...
  95. Chemistry- DrBob222

    Please check. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 9 psi (vs. 14.7 psi at sea level). Under those conditions and ...
  96. physics

    A worker in a warehouse uses a rope passing through some pulleys to lift a heavy crate. The worker exerts a force five times less than the weight of the crate but has to move the rope four times as far as the crate moves. This situation... A) can happen because the extra ...
  97. Art

    Discuss a minimum of two reasons why Jackson Pollock's Convergence (p. 510, Figure 734), is a work of "fine art" as opposed to an arbitrary composition of paint. Imagine that you are a defense attorney for this work of art. Establish a very strong "argument" for this artwork ...
  98. Physics

    A mass m1 = 3.3 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.4 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.87 m. 1) How much work is done by gravity on the ...
  99. English

    Can you check these sentences,please? 1) It was too bad you couldn't go skiing with your boyfriend 2)I decorated the Christmas tree with lights, angels, bells, snowmen, ribbon, stars and baubles. 3) Antony succeeds in stirring the crowd against Brutus 4 I reiceved a golf club ...
  100. English

    Yes, you are right. Thank you very much for giving me advice, too! By the way, I need to include this sentence in an email. Could you please check it? 1) As promised, I'm sending you both the email address and the password of my first class so that your students can get in ...
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