alg/trig

4,409 results, page 25

  1. trig

    tan^2theta+6=sec^2theta+5
  2. trig

    what is 7pi/3 in degree .13pi/3 in degree
  3. math-trig

    tan(t)-sec^2(t)/tan(t)
  4. trig

    cos^(2) 20 degrees + sin^(2) 20 degrees +pi/2
  5. trig

    find the indicated vector. let u = (-9,1), v=(-5,9). Find 3u+v
  6. trig

    simplify (1-cot^2x sec^2x) / ( cot^2x)
  7. trig

    simplify (1-cot^2x sec^2x) / ( cot^2x)
  8. trigonometry (Trig Equation)

    4 cos 2x + 3 cos x = 1
  9. pre calc

    The terminal side of an angle in standard position goes through the poin (-2,5). Find the values of the 6 trig function sin cos tan csc sec cot
  10. trig/math

    Two ships leave a harbor together traveling on courses that have an angle of 124° between them. If they each travel 511 miles, how far apart are they (to the nearest mile)?
  11. Algebra 2/Trig

    We just started logarithms and exponential functions, and I'm kind of getting the gist but not really. Here is what I tried on one of the homework problems: 2^X=4^X+1 1)2^X=(2^2)^X+1 2)x=x+1 3)0=1 or no solutions I wasn't sure what to do between steps 1 and 2. Thanks!!
  12. Math

    What are some examples of exponential function (Using the formula: Al = A0(1/2)^t/h ), trig functions that are used to find amplitude, period, max, min etc., and combinations of transformation at home or in life in general?
  13. Trig?Precalc

    write the rectangular equation x^2+y^2=6 in polar form. I do not want people to just post the answer! Please, show your work so that I can understand how to do these kinds of problems myself! Thank you and God Bless!
  14. trig

    An airplane pilot wishes to maintain a true course in the direction 250° with a ground speed of 400 mi/hr when the wind is blowing directly north at 60 mi/hr. Approximate the required airspeed and compass heading
  15. Trig

    Use the equation mg sin A = umg cos A to determine the angle at which a waxed wood block on an inclined plane of wet snow begins to slide. Assume the coefficient of friction, u, is 0.17.
  16. trig

    Find the values of sin 0, cos 0, and tan 0ƒáif the angle 0ƒáis in standard position and its terminal side passes through the point (¡V15, 8). Give answers as fractions.
  17. Trig

    mercury rotates around the sun in approx. 89 earth days (or 7,689,600 s. use a calculator to approximate its angular speed. choices: 4.09x10^-7 0.035 0.071 8.17x10^-7
  18. Trig

    Express 10sin(ƒÖ.t+ƒÎ€4) in the form AsinƒÖ.t + BcosƒÖ.t Your symbols are illegible, with things like Euros and capital O-umlauts. Can you possible retype with different symbols?
  19. Algebra2/Trig

    Find an equation of the parabola with vertex at the origin. Passes through the point (4,6); horizontal axis. I know it has to be y^2=4px. But I don't know what to do with (4,6). Please show step by step. Thanks.
  20. Trig

    A 30 degree central angle is in central position in a circle with a radius of 7 square roots of 5 (245). What are the coordinates of the point where the terminal ray intersects the cicrle?
  21. trig

    How do I dertermine the measure of theta for the equation 4cos theta - sqrt 12 = 0. My answer was 2pi/3,4pi/3 I'm told it's wrong could you please show me how to do this type of question
  22. trig

    the scores on a 100 pt test are normally distributed with a mean of 80 and a standard deviation of 6. a student's score places him between the 69th and 70th percentile. what is his score?
  23. trig

    find all values of degrees in the set (o,2 pi) satisfying cos of degree over 3 equal to square root of 3 over two and -cosdegree + 2sindegres=-2
  24. trig

    In a circle of radius 12 inches, a sector is formed by a central angle of pie/4 radians. Find the area of the sector to the nearest hundredth of a square inch.
  25. trig

    A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the radian measure of the angle at R? (A) 5pi/24 (B) 5/24 (C) 5pi/12 (D) 5/12 (E) None of the above.
  26. trig

    A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the area of T? (A) 50p3/(1 +p3) (B) 10p3/(1 +p3) (C) 50/(3 + 3p3) (D) 10/(3 + 3p3)(E) None of the above.
  27. Trig

    Proving Identities: 2 columns (tan + cot)^2 = sec^2 + csc^2 I'm having trouble breaking down the left side to = the right side.. Any help please
  28. alg2/trig

    1)3x^2-12x-21 solve by completing the square in simplest radical form 2) (1/x+3)-(2/3-x)=(4/x^2-9)find values of x 3)3/radical(3a^2b^4) is equivalent to 4) factor completely 27x^-75x^4
  29. Trig

    A parabola has its vertex on the graph of the line y=3x+1 and passes through (1,10). If it is the same size,? shape, and direction as the graph of y=3x^2, find the equation (s) of all possible parabolas Thanks!!!
  30. TRIGONOMETRY

    I don't understand how to convert -3-4i to polar coordinates. I need to know how so I am ready for my trig final next year. Can someone please show me step by step how to solve this? Thanks
  31. trig

    At a horizontal distance of 101 meters from the base of a tower, the angle of elevation to the top is 15 degrees. Find the line of sight distance to the nearest meter.
  32. Pre-Calc/Trig

    Complete the following for each system that involves one or more quadratic equations: Solve the system algebraically 7y^2-5x^2+20x=3 5x^2+21y^2=209
  33. ALG

    Solve. Write the solution set using interval notation. x2 + 16x + 64 > 0 Solve. Write the solution set using interval notation. x − 4/ (x + 1)(x − 1) ≤ 0
  34. trig

    The number of a fraction is three more than twice the denominator. The fraction simplified is equal to 9/4 Find the fraction
  35. trig

    in proving trigonometric identities if cot theta sin theta = cos theta. what is the correct answer?
  36. trig

    what is the correct answer in proving trigonometric identities if tan theta/sin theta = sec theta
  37. trig

    what is the correct answer in proving trigonometric identities if tan theta / sin theta = sec theta
  38. trig

    Solve for theta, giving a general formula for all of the solution: tan(theta)=-1 sin(theta/2)=1/2
  39. trig

    use basic identities to simplify the expression. csc θ cot θ / sec θ
  40. college trig

    find the radius of a pulley if rotating the pulley 108.03 degrees raises the pulley 37.3mm
  41. trig

    evaluate the expression under the given conditions tan 2 theta; cos theta=7/25, theta in quadrant I
  42. trig

    The hypotenuse of a right triangle has length 8. The area of the triangle is also 8 units squared. What is the perimeter of the triangle?
  43. math 30 Trig

    If sin theta = -7/8, then the value of 1/cot theta in the interval 3pi/2 <theta <2pi is:
  44. trig

    In ΔXYZ, ∠X=47° and ∠Y=29°. ∠XWZ=90° and XY=3.9. Find the length of WY to the nearest 100th.
  45. Trig

    Given that theta is a quadrant 3 angle with cos of theta=-7radical65/65, determine tan of theta
  46. trig

    A 115 foot foot casts a 147 foot shadow, what is the degree of elevation to the sun
  47. trig

    Find the smallest positive value of x(in degree) for which tan(x+100°)=tan(x+50°)*tanx*tan(x-50°)
  48. trig

    Suppose that 0degrees<theta<180degrees. what is the sign of each of the following? a) cos theta/2 b)sin(-theta)
  49. trig

    Suppose that 0degrees<theta<180degrees. what is the sign of each of the following? a) cos theta/2 b)sin(-theta)
  50. trig

    write sec theta in terms of sin theta when theta lies in quadrant III
  51. Trig

    Help please! Thank you! If csc(theta)= -2 and theta lies in Quadrant III, find tan(theta).
  52. Trig Maths

    solve the equation 5sin(θ -pi/6)=8cosθ for values of 0<=θ <=2pi
  53. Trig Maths

    solve the equation 5sin(θ -pi/6)=8cosθ for values of 0<=θ <=2pi
  54. Trig help

    What values for theta(0<_theta<_2pi) satisfy the equation? 3sin theta = sin theta-1
  55. Trig

    If tan theta = a/b, where a and b are positive, and if theta lies in quadrant III, find sin theta
  56. Trig

    If cot theta = -12/5 and the terminal side of theta lies in quadrant II find secant theta
  57. Trig

    find the algebraic expression that is equal to sin (-theta) sec(-theta) cot(-theta)
  58. Trig

    Can someone check my answers? Find # of triangles possible: <A=44.3, a=11.5, b=7.7 ... 2 triangles, B=~27.9 or B=~152.1 <A=29.3, b=20.5, a=12.8 ... 2 triangles, B=~51.6 or B=~128.4
  59. Trig

    Write an equation of the circle described below: Given a circle with the center (5,1) and a point on the circle (8,-2).
  60. trig

    Use a compound angle formula for sine to show that sine2(theta) = 2sine(theta)cos(theta)
  61. trig

    Find all values of [theta] in the interval 0°<=X<= 360° that satisfy the equation cos2[theta]-cos[theta]=0
  62. Trig

    If b=5 , the angle C=50 and the angle A=50 find the other angle B and the remaining sides and . Give your answer to at least 3 decimal places.
  63. trig

    Let be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).
  64. trig

    Suppose that the point P is the point on the unit circle that is associated by the wrapping function with the number 31. In which quadrant is the point P located?
  65. trigonometry

    given that sin alpha/2 = 2/3, and that alpha/2 is in quadrant II, determine the exact values of all trig functions for alpha.
  66. trig

    ABC- with angles AB, and C and sides AB,BC, and AC, angle B is right 90degree angle, if sin of angle A is 0.5, side BC 8in., what is length of AC
  67. TRIG

    the population of a certain city is 1.3 million people. if the population is growing at the rate of 4% per year what will the population be in 8 years
  68. Trig

    suppose tan theta equal 4 and theta lies in the third quadrant. find the values of sec theta
  69. Trig

    A vertical tower is on a 12° slope. from a 50 m down the hill, the angle of elevation of the top of the tower is 30°. find the height of the tower
  70. Trig

    Find all values of theta where 0degrees<theta<360 degrees when csc theta = square root 2
  71. Trig

    Find all values of theta where 0degrees<theta<360 degrees when csc theta = square root 2
  72. Calculus

    S=integral sign S3x(4-x^2)^1/2 use trig substitution I am confused I got x sin(sin^-1(x/2))+cos(sin^-1(x/2))
  73. Trig

    2cos^2Beta-Cosbeta=0 (find all solutions for the equation in the interval 0, 2 pi). I have no idea how to go about doing this. Do you isolate the beta on one side? Would you be able to show me how and I'll solve for you to check?
  74. trig

    A plane ascends at a 40° angle. When it reaches an altitude of one hundred feet, how much ground distance has it covered? To solve, use the trigonometric chart. Round the answer to the nearest tenth.
  75. Math: Calculus

    Find the smallest positive value of which satisfies -- x=4.100cos(2.800x) Give the answer to four places of accuracy._________ Remember to calculate the trig functions in radian mode.
  76. Trig

    I need help, I don't remember what to do. Find all solutions of the equation in the interval [0,2pi]. (2cosè+sqrt3)(cscè+1)=0 Write your answer in radians in terms of pi. If there is more than one solution, separate them with commas.
  77. TRIG

    1) Find an angle that makes the statement true: costheta =sin(3theta+10degrees) 2) Verify this proof: sec(Pie -x)= -secx Can someone show me how to solve for these. Very much appreciated!
  78. trig

    Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t whenever possible. 2pi 3pi/4 5pi/6 Three questions. I think those are supposed to be t.
  79. Math:Trig.!!!!

    You (safely) bungee jump from a 200-feet tall bridge in your town. Your distance above the water's surface depends on the time since you jumped. Sketch a reasonable graph.
  80. Functions & Trig

    evaluate each function at the given value: f(n)=-n^6+31n^4+26n^3+20n^2+-33n-20 when n=6 I was thinking that I should do synthetic division, but I've tried it a few times and I can't get it to work out correctly. Please help!
  81. Functions & Trig

    evaluate each function at the given value: f(n)=-n^6+31n^4+26n^3+20n^2+-33n-20 when n=6 I was thinking that I should do synthetic division, but I've tried it a few times and I can't get it to work out correctly. Please help!
  82. alg.

    Determine which two equations represent perpendicular lines. a) y=2x - 6 b) y=1/2x + 6 c) y= -1/2x + 6 d) y= 1/2x - 6 I know that perpendicular lines have negative recipricals, but I'm having trouble with this problem. I think the answer is b & c because they are both 1/2 and ...
  83. trig

    how do you solve cot theta divided by csc theta is equal to cos theta?
  84. Trig Identities

    If tan(theta)=7/13 and cos(theta)<0, what is the exact value of sin(theta)?
  85. trig

    sin theta/2cos theta/2=1/2 sine theta show the identiy and work
  86. trig

    Given that tan 45=1, use tan(x+y) to show that tan 22.5= /2 - 1. (/is square root sign
  87. trig

    If sinθ>0 and tangθ<0, explain how to find the Quadrant in which θ lies.
  88. trig

    If a and b are the measures of two first quadrant angles and sin a = and sin b = , find sin (a + b).
  89. Trig

    How do I find the quadrant in which angle thada may lie if cos thada > 0 and tan thada < 0?
  90. trig

    How do I name the quadrand in which angle thada may lie if sec thada > 0 and tan thada > 0?
  91. Trig

    Given sin theta = -3/5 and 0 is in quad 2, find Cos theta and tan theta
  92. trig

    for what values of theta between 0 and 2 pi is the function of theta equal sine theta positive?
  93. trig

    What does sin(squared)t + cot(squared)tsin(squared)t equal? and can someone explain it?
  94. trig

    If theta is a standard position angle and cot theta = 1.85, in which quadrant(s) could theta lie?
  95. Trig.

    I'm trouble solving for theta. Any help is appreciated. 0.73377324 = sin(theta)/cos(theta)
  96. trig

    if 5sin theta + 12cos theta is equal to 13 find the value of tan theta
  97. Trig help

    1. What is the period of the function? y = 4 cos pi x A. 1 B. 2 C. pi D. 2pi 2. Which represents the reference angle for 2pi/3? A. 2pi/3 B. pi/3 C. pi/4 D. pi/6
  98. Pre-Calc/Trig...

    Help me please Standard form: y=x^2-2x-3 Vertex form: ??? Intercept form: ???
  99. Trig

    Evaluate the trigonometric function using its period as an aid. cos 5pi how would i go about finding the period and what is a period?
  100. trig

    simplifying trigonometric expression a) sinx/tanx cosx b)sin^4a + sin^2a cos^2a c)sin0-sin0cos^2+ / sin^20 could someone help me with these?? thank you
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