trigonometry

2,120 results, page 7

  1. trigonometry

    tanA - sin A /sin^2A= tan A / 1 + cosA Please prove this
  2. trigonometry

    y = 4sin(x-90)+3 Calculate interval of increase, interval of decrease, intercepts
  3. Trigonometry

    If possible find a solution to 2 cos(theta)=-0612. theta=
  4. Trigonometry

    Given that cot x = 5/ sqrt 11 find csc x A - 5/6 B - 6/5 C - sqrt11/ 6 D - 6/ sqrt11
  5. trigonometry

    In triangle ABC, a=8, b=15, and m<C=40 degrees. Find the area of the triangle to one decimal place.
  6. Trigonometry

    Can you please help me solve this trig equation for 0 ≤ x ≤ 2π? 9sin^2(x)-6cos(x)-10=0 Thank you!
  7. trigonometry. Math

    In a triangle PQR, angle Q=50 degrees,PR=5CM, QR=4CM. find angle P?
  8. precalculus/trigonometry

    Find a formula for the given linear function. The graph of h intersects the graph of y = x^2 at x = -2 and x = 4
  9. trigonometry

    parameterize the portion of the unit circle that begins at the point (-root2/2, root2/2) and ends at (0,-1)
  10. trigonometry math help

    If cos 20=m determine the values of the following in terms of m. (a)sin 250 (b)sin 20 thanks
  11. trigonometry

    Prove that 2sin150*cos315*cos(90-x)/sin(360-x)cos(-240)sin135=2
  12. trigonometry

    If sin theta =a/b and theta lies in first quadrant, find all t-ratios.
  13. Trigonometry prove need help

    Prove that (1-sinb)/(1+sin2b)=tan^2(45-b) plz the b means beta???
  14. Trigonometry

    For which angles in degrees if any, is sin A not equal to 1/csc A? Answer for 0 through 359 degrees.
  15. trigonometry

    Find the angle of elevation, depression and the height of a building from the tip of another building with a distance of 1.2 km.
  16. Trigonometry

    1.Find the missing values given that Ø in degrees=30. Can someone show me how to find sin
  17. Trigonometry

    28. Find all solutions if 0° ≤θ <360°. 4sin2 (3θ)−3= 0
  18. trigonometry

    Find an exact value for csc 11pi/12 How do I do this? I change it to 1/(sin 11pi/12) but then I'm stuck what to do.. Thanks
  19. Trigonometry

    Write an equation of cotangent with period = 3pi, phase shift = -pi, and vertical shift = -1
  20. Trigonometry

    How to divide a right angled triangle into two isosceles triangle ? Kindly help
  21. trigonometry

    Please solve this equation. As you write down the steps, please give me a description on what you did. y^3 - 16y^1/2 + 64 = 0
  22. Algebra 2 w/Trigonometry

    How would you work the problem: 2 with the exponent of 4 minus 3 times 5 divided by 10 plus 16-15 divided by 10?
  23. trigonometry

    solve for 2cos2x=tan225 and, solve using transformation method cosx+ root2sinx= root3 THANKS!
  24. trigonometry

    find all degrees solutions to the following equation: sin (A + 50 degrees)=1/square root 2
  25. Trigonometry

    If sin A=3/5 and cosB = 24/25 and angle A and angle B are both in quandrant 1. What is sthe exact value of cos (A-B)?
  26. Math

    Trigonometry Identities problem: Prove the following; (tan^2x)(cos^2x) = (sec^2x - 1)(1-sin^4x) ÷ (1+sin^2x)
  27. trigonometry

    The wheels of a car have radius 11 in. and are rotating at 800 rpm. Find the speed of the car in mi/h. mi/h
  28. TRIGONOMETRY

    Suppose tan theta=15pi/18 is less than theta 3pi/2 , what are the other trigonometric functions?
  29. Trigonometry

    If Cot θ = -Square Root of 15/7, use the fundamental identities to find Cosθ > 0.
  30. Trigonometry

    If 5cosA+3=0 and 180(degrees)<A<360(degrees) Determine 1. Tan^2A And 2. SinA over cosA
  31. math trigonometry

    Prove that 2sin150*cos315*cos(90-x)/sin(360-x)cos(-240)sin135
  32. Trigonometry

    An automobile tire has a diameter of 36 inches. How many revolution will the wheel make as the automobile travel 1 mile
  33. Trigonometry

    If the terminal side of angle theta passes through point (-3, -4), what is the valuse of sec theta? 1) 5/3 2) -5/3 3)5/4 4)-5/4
  34. Trigonometry

    Determine all the values of theta,0 degrees < or = theta < 360 satisfying csc(x)<0 and cot(x)>0
  35. Trigonometry

    Evaluate arctan(cot10Pi/9) sec(arccos(-1/6) csc(arcsec(5/3) sin(2 arccos(sqrt5/5)
  36. Trigonometry

    If 5cosA+3=0 and 180(degrees)<A<360(degrees) Determine 1. Tan^2A And 2. SinA over cosA
  37. Trigonometry

    If 5cosA+3=0 and 180(degrees)<A<360(degrees) Determine 1. Tan^2A And 2. SinA over cosA
  38. trigonometry

    If a locomotive wheel with a diameter of 15 meters rolls 11.25 meters,through how many degrees and minutes does it turns?
  39. 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?
  40. Trigonometry

    simplify: 2sin35 deg times cos35 deg.
  41. Trigonometry

    [sinxcosx/(1+cosx(]-[sinx/(1-cosx)]= -(cotxcosx+cscx)
  42. trigonometry

    If sine of an angle is ¼ and cosine of an angle is 15/4.. find cosecant.
  43. Trigonometry

    Show that cos M(1/cosM-cosM) is equal to sin^2M
  44. Trigonometry

    Where does the graph of y = tan theta intersect the graph of y = -1 where n is any integer?
  45. trigonometry

    in triangle abc, m<c=90, bc=20, and ba=40. a.find sine a b.find measure of <a
  46. trigonometry

    Graph the function f(x)=-1/2sin2x+1 on the interval [-2pi, 2pi]
  47. Trigonometry

    Determine sin x - tan x - sin x=0 for 0 ≤ x < 360°
  48. Trigonometry

    Can you verify this identity? cos(4x)cos(2x)= (1/2)[cos8x+cos2x]
  49. Trigonometry

    Solve: 2cos^2 theta - 3cos theta+ 1= 0 interval [0, 2ð)
  50. Trigonometry

    Solve triangle ABC: B= 60 degrees, C= 90 degrees a= 4 feet
  51. trigonometry

    {1/(sec x - 1)} - {1/(sec x +1)} = 2 cot^2 x solve using identities?
  52. Trigonometry

    Prove that cos(A+B)cosC - cos(B+C)cosA = sinBsin(C-A)
  53. Trigonometry

    IfA=340°, prove that 2sinA/2 = -(v1+sinA) + (v1-sinA)
  54. Trigonometry

    how many solutions does the system {y = x, y = tan x have? what is sec^-1 (sec-ð)?
  55. Trigonometry

    Write tan(pi/4 - Beta) as a function of Beta only.
  56. Trigonometry

    Write cos (lambda + pi/3) as a function of lambda only.
  57. Algebra 2/ Trigonometry

    If cos θ = c, then sin²θ/2 equals 1) 1-c/2 2) 1+c/2 3) 1-c/c+c 4) 1-c/4
  58. Trigonometry

    Solve tan2A - 2tanA = -1 for 0º≤A≤360º.
  59. trigonometry 28

    In triangle ABC , if angle c=90°,then prove that sin^2 A+sin^2 B=1.
  60. TRIGONOMETRY

    Express tan theta in terms of cosec theta
  61. Trigonometry

    A=30 degrees, a=9 and b=8. Find the missing sides/angles. I did cos39=x/8 and reduced that to 8cos39=x. I got 6.92. But that's not a valid answer, so I can't go from there. What did I do wrong? Can you show me how to get the other answers as well, please?
  62. math(advanced algebra&trigonometry)

    the expression cos4x cos3x + sin4x sin3x is equivalent to which one of the following is the answer: 1) sinx 2) sin7x 3) cosx 4) cos7x
  63. trigonometry

    The function d=11cos6t describes a simple harmonic motion, where d is the distance(in meters) an object travels in t seconds. What is the time required for one complete cycle?
  64. trigonometry

    please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.
  65. trigonometry

    please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.
  66. trigonometry

    please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.
  67. Trigonometry

    Find all solutions of 4(sin(x)**2)-8cos (x) -8 = 0 in the interval (2pi, 4pi). (Leave your answers in exact form and enter them as a comma-separated list.)
  68. trigonometry

    how fast is a toy car moving in ft/min if it makes 20 laps in one minute on a circular track of radius 3 feet ? ( i need to know how to set this problem up)
  69. Trigonometry

    Law of Sines sigma=27 deg 30' c= 52.8 a=28.1 Please show two solutions (beta1, beta2,...) due to acute and obtuse angles. Thank you so much for helping!
  70. College Algebra and Trigonometry

    if x = ucos(pi/4) - vsin(pi/4) and y = usin(pi/4) + vcos(pi/4), find A, B and C so that, 5x^2 - 6xy + 5y^2 = Au^2 + Buv + Cv^2. Thanks, I really don't know what to do, I've already used almost 20 sheets of paper. Please help me. Thanks.
  71. Pre-Calculus (Trigonometry)

    An angle in standard position such that sinÈ = 5/13. Determine the possible values of È, to the nearest degree. Answer: I got 23°. (How do I get the second one?)
  72. Math

    I'm in gr 11 doing Trigonometry 14.2 = b ---- ---- sin38 sin 67 a = 46 --- ---- sin20 sin130 (10.7)^2 = (9.5)^2 + (12.4)^2 - 2(9.5)(12.4) cos <B I just need someone to explain this to me because I just don't get it... thank you for any help
  73. Trigonometry

    How do I find all solutions to: tanx+3cotx=4? The answer choices are: a.) x=arctan3+nPi b.) x=arccot3+nPi
  74. Math

    Trigonometry problem: The sides AB and AC of triangle ABC are of lengths 4 and 7 respectively. M is the midpoint of BC. AM is of length 3.5, Find the length of BC.
  75. trigonometry

    A pilot is flying with an air speed of 185mph. Find the ground speed of plane and the direction of flight.
  76. trigonometry

    Use identities to simplify each expression. 1) (sin2t) (cos5t) + (cos2t) (sin5t) 2) {1/(sec x - 1)} - {1/(sec x +1)} = 2 cot^2 x
  77. Trigonometry

    A side 2.8m long makes an angle of 25 degrees with the ground how high is the top of the slide above the ground .
  78. Trigonometry

    Solve cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places. Please explain.
  79. Trigonometry

    A bicycle with a 26-inch wheel(diameter) travels a distance of 700 feet. How many revolutions does the wheel make?
  80. trigonometry

    the bases of a trapezoid are 22 and 12 respectively. The angles at the extremities of one base are 65^ and 40^ respectively. Find the two legs
  81. Trigonometry

    A bicycle is traveling at 20 feet/second. If the diameter of the wheel is 24 inches, what is the angular velocity in radians/second?
  82. trigonometry

    the angle of elevations from the top of the tree to the point on the ground is 63 yards from its base 45degrees. How tall is the tree?
  83. Trigonometry

    Johns eyes are 6 ft from the ground. He is standing 70 ft away from a tree. If the angle of elevation is 24 degrees, then how tall is the tree?
  84. Trigonometry

    Graph the following functions .include two full periods .a)y=3cos(2x) and b)y=-4sin(4x) on same graph
  85. trigonometry

    a motor boat moves in the direction of N 38° E for 3 hrs at 20 mph. How far north and how far east does it travel?
  86. Trigonometry- ??????

    Solve the equation for 0≤ x ≤ 180 given tan(x) sin^2(x)=2tan(x) How do I do this? Thank you and Merry Christmas! :)
  87. trigonometry

    what is the smalliest positive anglecoterminal of -61 degrees,501,632,1024,-350,721,-0.5 and 512 degrees?
  88. Trigonometry

    A rocket is launched from a tower that is 200 feet high at 1000ft/sec at 48°. How far does the rocket travel?
  89. trigonometry

    if tan theta= 1/2, find the exact values of the five remaining trigonometric functions for theta, which is acute
  90. trigonometry

    The shadow of a vertical tower is 65 ft long when the angle of elevation of the sun is 35 degrees. Find the height of the tower
  91. math- Trigonometry

    If cos degree equals to 0.8641 What is Sin degree? I have no idea how to find this. Please help me. Thank you
  92. maths trigonometry

    solve the equation (cos theta +1)(tan theta minus 1)=0 for solution between 0 and 2pii.
  93. maths trigonometry,

    find all solutions between 0 and 2pii for (tan theta =1)and (cos theta =negative 1/2).
  94. Calc

    Question: Using trigonometry, add these two vectors. 7m/s [N30E] and 2m/s [S17E]. THIS is my answer: 6m/s [N45E] is this the correct answer?
  95. trig

    how come you get different answers if you take different paths in trigonometry? (when you choose to use sin, cos or tan)
  96. trigonometry

    given triangle ABC with AB=7cm, BC=8cm and AC=9cm calculate 1. the size of the largest angle 2. the area of the triangle
  97. trigonometry

    Find all the angles between 0 degrees and 360 degrees which will satisf y the equation: 5tan^2 y +5 tan y = 2 sec^2 y
  98. trigonometry

    an automobile tire has a diameter of 36 inch.how many revolution will the wheel make an arc the automobile travels 1 mile (5280 A)?
  99. Trigonometry

    What is the period of y = ã3sin (1/3x-ã1/3)? A, 6ƒÎ B. ã3ƒÎ C, 2ƒÎ/3 D. ƒÎ/3 What is tan^-1 ã3/3? A. ƒÎ/6 B. ƒÎ/4 C. -ƒÎ/3 D. -ƒÎ/4 What is the frequency of y = tan (ƒÎ/3 x) ? A. 3 B. 1/6 C. ƒÎ/3 D. 1/3 What is the amplitude of y = 1/5 sin (ã...
  100. Trigonometry

    √3 + 5cos⦸ = 3 cos⦸ Can someone please explain for me how to express the answer in radian measure? Thanks
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