Trig check my work please?

90,437 results, page 50

  1. English

    I need someone to check my answer on this question in an English quick check. Thanks :) 1. In adventures of huckleberry finn what is unusual about the house Huck and Jim find? A. it is completely empty B. it is floating C. there is no furniture I think A?
  2. 5th math

    Nia scored 21 points in the game. If she scored 13 points in the first half of the game, how many points did she score in the second half? I subtract 21 from 13 and got 7? To check my work I added 13+7 and got 20?
  3. Phyics help

    I have a few physics questions: 1. How much mechanical work is done by a weightlifter holding a mass of 100 kg, 2.0m above the floor for 3.0 s? Explain ur answer. 2. Calculate the force needed to do 2.0 kJ of work to push a load of bricks 10m? 3. A carpenter applied a force of...
  4. Algerbra

    solve for x ac+x=xy have all terms with x on one side ac=xy-x take x as common factor ac=x(y-1) now solve for x 25a^2 - 9b^4 can u please help me solve and check these equations
  5. Math 8R - HW Qs. Check

    Write the product of (1.7 x 10 to the 9th power) x (1.4 x 10 to the 2nd power) in scientific notation My Answer - 2.38 x 10 to the 11th power am i correct and please reply this post
  6. trig

    Determine the height of a tree which casts a shadow of 13.7m when the sun is at an angle of 28 degrees.
  7. trig

    Find all angles of a right triangle RST given that r = 18cm and s=20 cm
  8. trig

    What is the amplitude of y = (3sinx/2) + 4? Any link of proof would be appreciated if you have one Thank you
  9. trig

    Solve without using a calculator or tables cos(5pi/6 + pi/4) Thank you Reiny!:)
  10. trig

    Solve for the unknown. Assume that all of the angles are acute. 1. U = 69 A = 75 AN = 56 NU = ______ is this right NU= 92.05
  11. trig

    How do you find all the solutions of the equation in the interval [0,2π)? 3tan^3x=tanx
  12. trig

    If tan(x)=8/3 and sin(x)<0, then find cos (x) sec(x) csc(x) i don't understand how u do this problem
  13. trig

    a student fitted the line l to the data points (0,3), (2,3.6) (3,6), 6,3) find the center of gravity
  14. trig

    How do you find the exact value of an inverse function geometrically. ie, tan(cos-1(4/5))
  15. trig

    Find all solutions of the equation 2sin^2x-cosx=1 in the interval [0,2pi) x1= ? x2=? x3=?
  16. TRIG

    find: sin 23pi/12 i got totally the wrong answer how do i approach this?
  17. trig

    how can you confirm the identity cos^4x = (1/8)(3+ 4cos2x+ cos4x) and sin4x = (4sinxcosx)(2cos^2x-1)
  18. Calculus (trig stuff)

    given a angle how do I find it's point P on the unit circle?
  19. trig

    Express each value as a trigonomic function of an angle in quadrant I: Cot(-660)
  20. Trig

    If sin^2X=A what is an algebraic expression in A for cos(2X). I have no idea where to even begin with this!
  21. gr 12. advanced functions

    Trig identity Prove: cos2x tan(pie/4 - x) ------- = 1 + sin2x
  22. trig

    Use a half-angle formula to find the exact value of cos 5ð/12
  23. Trig

    How do you find csc 163degrees 20minutes? (I didn't know how to insert the degree and minute marks)
  24. Quick Math trig question

    Would sin^2x / cos^2x equal tan^2x?
  25. trig

    Given that sin = 3/5 and lies in quadrant II, find the following value. cos
  26. trig

    Determine a pair of coterminal angles in radian measure to the angle pi over 2
  27. trig

    findall exact solutions ( in terms of radians) to the equation 2cos(40)-radical 3 =0
  28. Trig

    evaluate exactly(without calculator): 1. sec(pi/4) 2.3sin4pi 3. tan240(degrees)
  29. trig

    how do you use doubel-angle formulas to find sin, cos, and tan
  30. trig

    Rewrite 3pi/25 in degree measure. Round to three decimal places.
  31. Trig

    Solve the right triangle ABC using the given information: cos A = 2/5 ; c = 15
  32. trig

    evaluate the trigonometry function using its period as an aid cos(-7pi/3)
  33. trig

    Hi,how do I find both solutions of the equation cos0 = 0.35 between degrees 0 and 360? Many thanks
  34. trig

    Calculate the amplitude, period, phase shifts, and 5 points for y=2-sin(2piex/3)
  35. maths trig

    if p and q are the solutions of the equation atanx+bsecx,show that tan(A+B)=2ac/(a^2-c^2)
  36. trig

    evaluate the expression: cot 270 + 8 cos 180 + 5 sec2-360
  37. trig

    3tan(3x) = sqrt(3) Solve the equation for exact solutions of the interval [0,2pi).
  38. Trig

    Find the value of tangent of angle A, given cos2A = 4/5, and A terminates in quadrant 2
  39. trig

    Use the double angle formula to verify the identity cotxsin2x=1+cos2x
  40. trig

    Evaluate each value as a trigonometric function of an angle in Quadrant 1. #1 cos (27pi/8)
  41. trig

    ABC is an isoscele triangle in which [AB]=[AC]=5cm and [BC]=6cm. Calculate [AM], where M is the mid-point of BC.
  42. Calculus/ trig

    Find the area bounded by the curve and the lines y=sinx, y= 1/2, x=5pi/6 and x=pi/6
  43. Trig

    a clock has a diameter of 1 foot what is the angular size if viewed from a distance of 27 feet
  44. math

    4cot^2x-4/tanx+cosxsecx factorin algenraic single trig function
  45. trig

    In Rights Triangle ABC with C=90 degrees if a=4 and c=2square roots of 7, find SinA
  46. trig

    In Rights Triangle ABC with C=90 degrees if a=4 and c=2square roots of 7, find SinA
  47. Trig

    Find all solutions of equation on interval [0,2pi] 1=cot^2x + cscx
  48. Trig

    Find all solutions of the equation on the interval [0,2pi): Tan^2x=1-secx
  49. pre calculus 2

    use the fundamental trig. Identities to simplify tan^4x+2tan^2x+1
  50. trig and cotagent

    Evaluate cot(11pi/6) to the nearest hundredth (given in radians).
  51. trig

    5sin^2 270degrees -3cos180degrees-tan(-180degrees) i got -2 but I'm not sure if i did it right?
  52. trig

    find reference angle 111degrees and -105 does it equal =75? i don't know the first one
  53. TRIG

    A 5.5 ft tall woman casts a 6.2 ft shadow. Find the angle of elevation of the sun.
  54. Trig

    2sin^2(x) = 2 + cos(x) interval [0,2pi) How do I solve this? Help would be greatly appreciated!
  55. trig

    P(2, 9) is a point on the terminal side of è in standard position. What is the exact value of tan è?
  56. trig

    Find all values of x in the interval [0, 2π] that satisfy the equation. 6 sin2(x) = 3
  57. trig

    Triangle XYZ has vertexes at X(-4, 5), Y(-3, 5), and Z(-3, 4). Find the measure of angle Y to the nearest degree.
  58. trig

    Find all solutions to the equation 2cos(2x) = x + 1, correct to 4 decimal places.
  59. trig

    what is the hietgh difference between 2 walls 6 metres apart to get a 17.5 degree pitch
  60. trig

    Q1: In a right-angle triangle the base is 50 m long and its height is 40 m .find its area
  61. trig

    Find another angle theta between 0 and 2pi that has the same cosine as 3pi/14
  62. trig

    Cos(-11/12) use the sum or difference formula to find the exact number
  63. trig

    Solve the equation for exact solutions over the interval [0, 2pi]. 4 cotx+2=-2
  64. precalc/trig

    Write the partial fraction decomposition of the rational expression. 4x^2–19x+31/ (x+2)(x^2–4x+5)
  65. trig

    Find the exact solutions of the equation in the interval [0,2pi). sin(x/2)+cos(x)=0
  66. trig

    Find all the solutions of 2 sinx=1-cosx in the interval from 0° ≤x<360°
  67. Trig

    sin45cos25 + cos45sin25 = ?? a. cos70 b. sin70 c. cos20 d. sin 20 which answer is correct ??
  68. trig

    solve for x in the following equations: 1) sin(arcsin x) = 1 2) 2arcsin x = 1 3) cos(arccos x) = 1/3
  69. trig

    How do you decide if csc=74 is greater than or less than cos=74 without using a calculator?
  70. trig

    If the line OP of radius and(x,y) is rotated through a certain angle about the oringin
  71. Precal

    Write down 3 other possible trig forms for - 1 + isqrt2. How do you solve this?
  72. trig

    Expan each of the following using the compound-angle formulae:sin(x + 20degree)
  73. trig

    find the general solutions to the equations: 1) sec x = -2 2) 2 sin^2 x = 1 3) cos^2 x - 2cos x + 1 = 0
  74. trig

    16. Let W(ƒá ) be a point in Quadrant I on the unit circle with center O. W(ƒá )B is perpendicular to the x-axis at B, OB = 0.6. and W(ƒá )B ƒ­ 0.8. Find:
  75. trig

    Find all angles in degrees that satisfy the equationtan∝ +√3=0
  76. trig

    Give the following for the function: y=2+cos(5x+3.14 Amplitude: Period: Phase Shift:
  77. Trig

    y=sec(2x+1) Find the period and phase shift. Sorry i'm really bad at these.
  78. Trig

    How do i find the exact value of sin 15 using the half angle formula
  79. Alg2/Trig

    Write the log as a single function: logx + 2logy - logz
  80. trig

    find the values of x between 0 and 2 pi where the tangent line to the graph of y = sinxcosx is horizontal
  81. Algebra & Trig

    calculate the velocity of 10 meters per second with an angle of 30 degrees
  82. trig

    Show that the height, h, of the A-frame is equal to the expression 5sinc(1+2cosc). Im not sure what to do.
  83. trig

    find the exact value of sinu/2, given that cosu=-4/5 and pi/2less than u less than pi
  84. TRIG HELP

    find the exact solutions over the interval tanx = 1 all real x
  85. trig

    How would I solve this problem for t? 720 = 11.895+2.545sin [2pi/366(t-80.5)]
  86. trig

    how to solve for the value of sine and cosine function of 0,90,180 and 270 degrees?
  87. Trig

    Solve exactly over 0 ≤ θ < 2π secx + tanx = 1
  88. Trig

    Convert this equation so that it could be entered into a calculator in the standard y= format. x^2 - 4xy + 4y^2 - 8y + 2 = 0
  89. Trig

    Rewrite -2x^2 + sqrt(3)xy - y^2 +2 = 0 with the xy term eliminated. Round terms to nearest hundredth.
  90. Trig

    Use sum and difference identitites to find the exact value of co 15 degrees
  91. trig

    slove the equation exactly over the interval [0, 2pi) sinx=1-2sin^2x
  92. trig

    Through how many degrees does the minute hand of a clock moves in 5 minutes? In 1 1/2 hours?
  93. Trig

    Rewrite the expression (tan A)(cot A) in terms of a single trigonometric ratio.
  94. math - trig

    Why cant we solve an oblique triangle with the Law of Sines if we are given SAS?
  95. Trig

    In ΔABC, a = 19, c = 10, and m∠A = 111. Which statement can be used to find the value of C?
  96. Trig

    Find the 6th term of the arithmetic sequence with a9=120 and a14=195
  97. Pre-Calc/Trig

    y=-x^2+5x+36 converting into intercept form is this the correct answer? y=(x+9)(x-4)
  98. Trig/Pre-Calc

    Solve the polynomial equation. 15x^3-119x^2-10x+16=0
  99. trig

    solve each equation if 0 < x < 2pi. answer must be in radians 1. 4 cos x - 2 = 0 2. 3 sec^2 - 4 = 0
  100. Pre-calc/Trig

    For each parabola, tell in which direction the graph opens. x= 1/2y^2 y= -1/24x^2
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