4,424 results, page 17
  1. Trig

    Determine the roots of the function f(x)=-2cos(3x)-1. Can you please show all the work so it is easier to understand, thank you!!
  2. Trig

    Find the amplitude, period, and phase shift of the following function: y=-2cos2(θ+45)
  3. Trig

    The graph of y = 7cosx + 24sinx would be a sinusoid if it were plotted. What would be the first positive value of x at which there is a high point?
  4. trig

    Find the numerical value of cos(60degree) + cot(30degree): (A) 1/2 (B) 3p3/2 (C) 12 +p3 (D) 52p3 (E) None of the above.
  5. math trig

    If a ferris wheel has a radius of 20.5meters, how tall would a 45 degree angle be?
  6. trig

    Find the 6 trigonometric function of teta if it's terminal side passes through the point(1,2)
  7. trig

    how much force is necessary to stop a 2500 pound car from rolling down a 40degree slope
  8. trig

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

    find cos x/2, sin x = 1/4, 360 < x < 450, use half-angle identity
  10. Purdue Trig

    A spherical balloon is being inflated so that radius is increasing at a rate of 10 mm/sec.
  11. trig

    the mini tent of the clock is 5 cm far is the tip of THE HAND TRAVEL IN 35 MINS.
  12. trig

    solve for x 6tanx - 4sinx = 1 i tried it but got a quartic formula :S 16sin^4x + 8sin^3x + 37sin^2x - 36 = 0
  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. Inverse Trig

    How do I simplify arcsin (sin 6 pi) given the interval 0 ≤ theta < 2pi
  15. trig

    Write the following equation in standard form and identify the type of conic: 9y^2 - 4x^2 + 8x + 18y + 41 = 0
  16. Trig

    I was just wondering if anyone can explain the Law of Sines- "Ambiguity Case" to me, in a way that is easy to understand.
  17. trig

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

    on the same set of axes sketch the graph of f(x)=sin2x and g(x)=2sin x for x (o,180 degrees)
  19. 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
  20. trig.

    Find the degree measures of 2 angles, one positive and one negative that are co-terminal with 135.
  21. trig

    Find the exact value of the trigonometic function at the given real number of cot(5pi/3)
  22. Trig

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

    finnd a possible measure of the angle drawn in standard position that passes through the points (ã2,-ã2)
  24. Calculus/ trig

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

    which of the following sets gives the x coordinates where the parabola y=x^2+4X-50 and the line y=7x-10 intersect when drawn in the coordinate plane
  26. Math-Trig

    Find all angles in degrees that satisfy each equation. tan(a)+rad3=0
  27. trig

    Give an equation of a cosine function of x which has a phase shift along x of -1 unit and a wavelength of pi/3
  28. trig

    Give an equation of a cosine function of x which has a phase shift along x of 5 units and an amplitude of 4
  29. Trig

    Using a double angle formula how would you find the exact value of this expression? Cos²105° - sin²105°
  30. math

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

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

    show that cos(pi x) = pi cosx is not an identity by finding a single value of x for which it fails to hold.
  33. Trig

    Evaluate tan(a-b). No decimals. Only exact answer. Sin a = -7/25, cot b = -8/15 neither a nor b are in quadrant IV.
  34. maths trig

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

    Use an addition or subtraction formula to simplify the expression: tan(2−u)=cot(f(u)).
  36. trig

    half angle formula to find exact value cos 112.5 degree
  37. trig

    Given tan A = .29 find the angle A in degrees. Round your answer to the nearest hundredth.
  38. 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:
  39. Trig

    Evaluate tan(a-b). No decimals. Only exact answer. Sin a = -7/25, cot b = -8/15 neither a nor b are in quadrant IV.
  40. identities trig?

    find all solutions to the equation in the interval [0,2pie] cos2x=cosx
  41. trig

    which of the following sets gives the x coordinates where the parabola y=x^2+4X-50 and the line y=7x-10 intersect when drawn in the coordinate plane
  42. Math - Trig

    Explain why we cannot solve an oblique triangle with the Law of Sines given SAS.
  43. trig

    A wheel rotates at 100 revolutions per second. find the angle velocity in radians per second.
  44. Trig

    Solve the equation on the interval 0 less than or equal 0 < 2pi. 1. sec 30/2 = -2 2. cos(20 - pi/2) = -1 3. tan(0/2 + pi/3) = 1
  45. Math/Trig

    Find two exact values of sin(cos­­ˉ¹ √5/6)
  46. math (trig)

    Im having problems solving this equation: 2sin(x) = cos(x) + 2 I keep getting an imaginary number..:/
  47. trig

    How do I find the exact value of sin2x when secx is equal to the negative square root of three
  48. trig

    Given that sin x = - ã2/2 and that cos x is negative, find the other functions of x and the value of x. can you explain how this problem can be solved please.
  49. TRIG

    A 5.5 ft tall woman casts a 6.2 ft shadow. Find the angle of elevation of the sun.
  50. Pre-Calc/Trig...

    Am i correct? A vertical shift is an example of a non-rigid transformation. True
  51. Pre-Calc/Trig

    Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5
  52. Trig

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

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

    Graph one period of the following function. Show all work . y=2sinx+2cosx
  55. trig

    evaluate the expression below at t=4 p=$400 and r=-9% round youre answer 2 decimal place
  56. Trig

    Find the exact value of the trigonometric function given that sin u=3/5 and cos v=-8/17. Both u and v are in quadrant II. Tan (u+v)

    solve the equation 2 sec x- tan x = cot x for the interval 0 to 360 please:)
  58. Trig

    We started a new lesson on Monday on identities. Our test is tommorrow. I have no idea of what I'm doing! Can somebody help me study?
  59. Alg2/Trig

    Write the log as a single function: logx + 2logy - logz
  60. Trig

    How do I do this? I punch the numbers into my calculator, and they don't work. B=sin^-1 (12/7 sin42\[Degree])
  61. Pre-Calc/Trig...

    Help me please Is the given linear expression a factor of the polynomial? Show work. f(x)=2x^3+x^2-5x+2; x+2
  62. Trig

    There is an airplane at an altitude of 12000 ft. The angle of depression is 1 degree. How far on the ground is the plane.
  63. gr 12. advanced functions

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

    use a half-angle identity to find the exact value of tan 105 degrees.
  65. Trig

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

    a voltmeter's pointer is 3 cm in length. find the degrees through which is rotates when it moves 1.1 cm on the scale?
  67. trig

    If x and y are complementary angles and 5 tan x-12=0,calculate by using a diagram the value of 2sin(squared)x+cos y.
  68. Trig

    Verify and identify, I am so confused on how to do this? this is an extra credit but I am lost, please help. cot(Ý-ƒÎ/2)=-tan Ý
  69. trig

    Rewrite 8 cos2 x as an equivalent expression that does not contain powers of trigonometric functions greater than 1
  70. trig

    find all values of theta in the interval (0,360) that have the given value: sintheta= √2 ______ 2
  71. trig

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

    Find the exact value of: sin405. reference angle=225 sin225= -.707106781 = -.71
  73. trig. identities

    sin2x+sin2y=2sin(x+y)cos(x-y) Please helpp mee!! thank you sooo much really!!
  74. Trig

    Find the exact trigonometric function of cos(2a). hyp: 17 opp: 15 adj: 8
  75. trig

    if the terminal ray of an angle 0 in standard position passes through the point (-1,3),then cos0=
  76. Trig/Pre-Calc

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

    findall exact solutions ( in terms of radians) to the equation 2cos(40)-radical 3 =0
  78. Algebra/trig

    How would i use my calculator to find the approximate value of the expression, cot 0.2748 rad
  79. 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.
  80. trig

    Rewrite cos4x as an equivalent expression that does not contain powers of trigonometric functions greater than 1.
  81. trig

    Find the exact value of the trigonometric function: sec(-pi/12) I am not sure how to answer this off the unit circle.
  82. trig

    Find the altitude of an isosceles triangle whose base in 30 cm vertex angle is 75 degres
  83. Trig

    Determine the frequency of y = 2 �� 3 cos 10x. (nearest tenth) Please help!
  84. trig

    find a value of interval in degrees cotalpha=1.3692847 alpha=0.023903 is that correct?
  85. TRIG!

    true or false, the two sets of parametric equations x=t, y=t^2+1 and x=3t, y=9t^2+1 have the same graph. justify your decision.
  86. precalc/trig

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

    simplify: sqrt (6/11) a) sqrt (66/11) b) 6 c) 6 sqrt (11/11) d)6 sqrt (11)
  88. alg

    Solve for u: u − 2/ u − 4 + 6 = u + u − 6/ 4 − u
  89. Pre Alg (Check my work?)

    1.) In which Quadrant is the point (x,y) located if x is negative and y is positive? II III IV (MY ANSWER) I 2.) Point A(5,-10) is reflected over the Y axis. Write the coordinates of A'. (-8,-10) (8,10) (8,-10) MY CHOICE (-8,10) 3.) At the half-tame show,
  90. Alg 1

    The largest town square in the world is Tiananmen Square in Beijing, China, covering 98 acres. A. 1 sq mile is 640 acres. Assuming that the Tiananmen Square is a square, how many feet long is a side to the nearest foot? B. To the nearest foot, what is the
  91. AP calculus BC

    hello i know that deriv(cscx) = -cscxcotx and that deriv(cos) = -sinx deriv(cotx) = -((cscx)^2) my question is: is this (statements below) correct? antideriv(cscxcotx) = -(cscx) antideriv(sinx) = -cosx antideriv((cscx)^2)= -cotx were those antiderivatives
  92. math

    How to solve for delta using trig functions? i.e. cosine sine tangent secant Thank you I'm not sure what delta you're referring to. Could you please elaborate some for us. What is it you're trying to do with the trig funtions? the problem is.. limit sec
  93. Alg 1

    Landon is standing in a hole that is 6.5 ft deep. He throws a rock and it goes up into the air, out of the hole, and then lands on the ground above. The path of the rock can be modeled by the equation y = -0.005x^2 + 0.45x - 6.5, where x is the horizontal
  94. trig

    I get that we have to put it into radical form, but I don't understand the process. Can someone walk me through it and explain it? arccos(-1/2)
  95. trig

    write an equation expressing 19cos(theta-50degrees) as a sum of sine and cosine.
  96. Trig

    How do I simplify this? cos4xcos3x-sin4xcos3x I pulled the cos3x out as a common factor but that doesn't really help. Can someone please direct me on this. Thanks!
  97. Trig

    Convert the polar equation to rectangular form. r=4cos-4sin What I have so far: r^2=4rcos-4rsin x^2+y^2-4x+4y x^2-4x+y^2+4y=0
  98. Trig

    Using this graph: imgur [dot] com/utSgKI9 Find the measures of angles A and G in the drawing (m is parallel to n) if C=4x-18 and F=2x+34
  99. Pre-Calc/Trig

    Describe the end behavior for function by writing a limit expression. f(x)=2x^5-x+7
  100. calc/trig

    A 84-ft tree casts a shadow that is 130 ft long. What is the angle of elevation of the sun?


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