alg/trig

4,413 results, page 21

  1. Trig Proofs

    Please Help: please solve this proof: cosx- cosy = -2sin(x+y/2)sin(x-y/2)
  2. trig

    Given that sin(5x-28)degree=cos(3x-5),0 lessthan x lessthan 90degree,find the value of x.
  3. trig

    find the fundamental solution set (FSS) for(cos2θ)(tanθ+1)=0
  4. Trig

    Given that tan(pi/2) = a. Express tan(x) and sin(x) in terms of a. Hint: Use the fact that x = 2.(pi/2)
  5. trig

    given that tan(x/2)=a. Express tan(x) and sin(x) in terms of a. Hint: use that fact that x= 2*(x/2)
  6. TRIG

    Use the cofunction of a complementary angle. PLEASE HELP ME! tan θ = cot (30° + 5θ)
  7. Trig.

    In right triangle ABC, C is the right angle and sinA=(radical 3/2). What is the value of csc B?
  8. Pre- cal Trig

    2cos^2x=cosx. Can you subtract the cos from cos^2? Or what would i have to do?
  9. Trig, Math

    State the amplitude, period, phase shift, and vertical shift of f(x)=2cos(1/2x-pi/6)-1/3
  10. Help please Trig

    Given sinθ=0.76, find θ in degrees to the nearest tenth.
  11. Math/Trig

    Solve: sin x - 2sin x cos x = 0 for 0 is less than or equal to x is less than 2pi.
  12. trig

    Cos theta= 1/3, find the remaining trigonometric functions of the acute angle theta
  13. trig

    The parametric equations for a curve in the x-y plane are x=2+t^2 and y=4-3t. Determine the points where the curve intersects the x-axis.
  14. trig

    if x and y are positive acute angles, tan x=1/3and tan y =1/4, find the value of sin(x-y)
  15. Trig

    URGENT, Please answer this question: give the value of: Tan(Arctan x+1/x-1+Arctan x-1/x)
  16. trig

    Use the appropriate identity to find tan(theta) given that cot theta =0.05.
  17. trig

    Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2 - theta)
  18. trig

    whatis the possibilities for the square root of 2 times tan theta = 2 sin theta
  19. trig

    a right triangle contains a 25 angle. if me leg is of length 5 inches what is the length of the hypotenuse
  20. Trig

    Prove that the equation is an identity: cot4theta - csc4theta = -cot sq theta - csc sq theta How ??
  21. Trig

    3. In the figure below, the perimeter of the parallelogram ABCD is (6a + 8b + 29) and the perimeter of the triangle ACD is (3a + 4b + 32). What is the length of AC
  22. Trig

    cos45cos25 - sin 45sin25 = ?? a. cos70 b. sin70 c. cos 20 d. sin 20 which answer is correct ?
  23. Trig

    If the center of a circle is at (2,2) with a radius of 4 the equation of the graph would be : a) (x-2)^2 + (y-2)^2 = 16 b) (x+2)^2 + (y+2)^2 = 16 I think it would be b is that correct?
  24. Trig

    can you please simplify these in faction form? (pi/3) +1=? (2pi/3) +1=? (3pi/4) +1=? (5pi/4) +1=? (5pi/3) +1=? thank you so much!
  25. Trig Help

    Given that cos2x=7/12 and "270 equal or < 2x equal or < 360", find sinx. Please help and Thank you
  26. trig

    A ship sails 40 miles SOUTH and 15 miles EAST. Find the bearing from where it began? HELP.
  27. trig

    find all the values of X between 0 and 2π such that cos(3x-π/2) = √3/2
  28. Trig

    Is the angle 11pi/12 on the unit circle the same as the angle -pi/12? I'm thinking it would be, but I'm not sure.
  29. Trig

    What is the exact value of tan(s+t) if sin(s+t)=56/65. And cos(s)=5/13 and sin(t)=4/5. Everything is in the first quadrant
  30. trig

    If it is given that tan(A-B)=tanA-tanB/1+tanAtanB and tanP-1/1+tanP=tan195 find p
  31. Precalc with Trig

    What value(s) of x from 0 to 2pi solve the following equation: cos squared x - cos x - 6 = 0
  32. trig

    find the minimum and maximum value of sin100 degree plus cos100 degree
  33. Trig

    Evaluate and simplify cos(-15º). Hint: Substitute 30º-45º for -15º.
  34. trig.

    If P (x, y) is the point on the unit circle determined by the real number θ, then tan θ= x/y y/x 1/x 1/y
  35. Trig

    If the terminal side of an angle theta contains the point (-1,3), find secant theta.
  36. Trig

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

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

    the points (0,3), (1.8, -.365), (2, -.79) (4.5, -1.923) li on a line. Write the equation of the line in slope intercept form.
  39. 12th grade Trig

    sec theta = 2, sin theta is less than 0. I'm not sure what to do? Please explain. Thank you.
  40. trig

    Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I can't figure this out.
  41. trig

    In a right triangle the side opposite the 30 degree angle is 5 meters.Find the adjacent side.
  42. algebra trig honors

    x squared minus four thirds x plus four over nine
  43. Trig

    Could someone please show me how 1 / ( 4 tan (x/2) + 2 ) is converted to: (- sin (x/2) /( 2 sin (x/2) + cos (x/2)) TIA Carol
  44. Math/Trig

    State the amplitude, period, phase shift, and vertical shift of f(x)=-1/4sin(6x+2pi)+9
  45. trig

    80 feet from the base of a tower the angle of elevation to the top is 36 degree find the height of the tower
  46. trig

    solve each equation for 0 less than or equal to x greater than 2ð. cot²x-cscx=1 thanks:) step by step please :)
  47. trig

    find the period and amplitude of each sine function.then sketch each function from 0 to 2pi: 1)y=-3.5 sin 5theta
  48. trig.

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

    if point P is a point on the terminal side of 0, and 0 is in standard position, find sin 0,cos 0 and tan 0. 1. P(-6,8) 2. P (1,3) 3. P (-2,-40), 4. P (-5, -12)
  50. trig

    Use a graph of the cosecant function to find the value of theta for which csc theta equals 1.
  51. trig

    Use trigonometric identities to find sec theta, given that tan theta = Radical 5/ 3.
  52. Trig

    Using tables or a calculator, find tan 16 degrees 15 + cot 32.7 degrees to the nearest hundreths
  53. trig

    the basic N of an antenna rests on horizontal ground. the angle of elevation of the top R from a pt H on the ground is 42 degrees
  54. trig

    determine the phase shift of y = sin(3x - 2pi). indicate whether the shift is to the right or left.
  55. trig

    I need to prove parallelogram law using the law of cosines. 2AB^2 + 2BC^2 = AC^2 + BD^2 Please, help me to do this.
  56. trig

    How do i solve this equation over the interval [0degrees,360) cot(theta)+2csc(theta)=5
  57. alg2\trig

    if a3= 17 & a8=37 are terms in annarithmetic sequece, fina a1 & d. the answer is a1=9 & d=4 but i don't understand how they got the answer, please help!
  58. Trig-Algebra help asap

    A rhombus has sides of 5 cm and one diagonal is 6 cm long. Find the area of the rhombus.
  59. Trig-Algebra help asap

    A regular octagon is inscribed in a circle with a radius of 5 cm. Find the area of the octagon.
  60. Algebra-Trig help asap

    A rhombus has sides of 5 cm each and one diagonal is 6 cm long. Find the area of the rhombus.
  61. trig

    a vector has a magnitude of 16 and direction of 120 degrees. write the vector in terms of unit vecotrs i and j.
  62. Algebra & Trig

    at a throwing speed pf 12.2 meters per seconds,what is the angle that produce a distance of 13 meters
  63. math

    Simplify sin 2 theta over 2 cos theta to a single primary trig function
  64. trig

    Find the maximum and the minimum values of sinx + cosx and the smallest value of x which they have these values
  65. trig identities

    Find the exact value of cos (2theta) given csc theta = 8/3 and 0 < theta < pi/2
  66. trig

    what are the values of the angle in the interval 0<the angle<360 that satisfy the equation tan beta- radical 3=o
  67. Trig

    Find the area of a sector with the given central angle θ in a circle of radius r. θ = 90°, r = 6 cm
  68. trig

    The point (-3, 4) is on the terminal side of angle θ in standard position. Find cot θ.
  69. trig

    Find all real numbers in the interval [0,2pi) that satisfy the equation. cos^2 x+2 cos x+1 = 0
  70. Trig

    2 vectors at a Right angle to each other are pulling on a bolt. vector 1 = 650; vector 2 = 300 then R = ?
  71. Trig

    Write a quadratic equation whose roots are 5 + i radical 2 and 5 – i radical 2 ____ x^2 + _____ x+ ______=0
  72. trig

    I have arrived at .322 as the sine of the angle how do I find the actual angle (in decimal/deg)
  73. Pre-Calc/Trig...

    Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29
  74. Pre-Calc/Trig...

    Help me do this please. Simplify the expressions using imaginary numbers. 1. √-16 2. √-49
  75. Trig

    Determine the intervals of continuity of f(x)= ln(sin(x)) I looked at the graph and I have no idea how to state the intervals.
  76. Trig

    Write an algebraic expression for the following: sin⁡(arctan⁡〖(x+1)/(x-1)〗 )
  77. trig

    Find the magnitude and direction angle of the vector v. v = 4(cos 125°i + sin 125°j) ||v|| = θ =
  78. trig

    Find the component form of v and sketch the specified vector operations geometrically, where u = 4i − j, and w = i + 5j. v = −u + w v = ( , )
  79. trig

    If sin = 4/5 with A in QII, and sin B = -3/5 with B in QIV find cos(A-B)
  80. trig

    Graph the following from X = 0 to x = 2 pi 2cos 6x cos4x + 2 sin 6x sin 4x
  81. trig

    Prove the identity sin(3 pi /2 + x) + sin(3pi/2 -x) = -2cosx
  82. trig

    If an angle is pie radians, what is the arc length in radians?
  83. trig

    if a and b are acute angels and sin(a+b)=1,sin(a-b)=1/2 then prove that (1)tan(a+2b)=-(3)1/2
  84. trig

    trying to find lowest term: cos^2 è-1/4 cos è -1
  85. trig

    How do I solve this? If cos x= 3/5, find the exact value of cos 2x
  86. trig

    csc(x)=3 and pi/2 less than (x) less than 3pi/2, find cot(x).
  87. trig

    Prove: 1-sinx/1+sinx=sec*2x-2secxtanx+tan*2x
  88. trig

    verify the identity: sin(x+y)-sin(x-y)=2cosx siny
  89. trig

    HOW DO YOU SOLVE THIS PROBLEM, sin theta>0,cos theta>0
  90. Trig

    Solve for 0<x<2pi ---> (2radical2)cos^2(x)-(radical2-2)cos(x)-1=0
  91. trig

    if sin theta = 2/3 in quadrant 1, find sec theta. HELP!!!
  92. Trig

    find (s+t) given that cos s=1/3 with s in quad I and sin T=-1/2 with t in quad IV
  93. trig

    covert polar equation r = 6/(2-3sinè) to rectangular equation
  94. trig

    Evaluate the expression cos 22 degrees and sec 22 degrees
  95. trig

    If 2tanA+cot A=tan B, then prove that 2tan(B-A)=cot A
  96. trig

    if cot 17 degrees = 3.2709, find tan 73 degrees
  97. trig

    if x=4 tan theta, express cos(2 theta) as a function of x
  98. Trig

    Eight Fundamental Identities Sec thada - Cos thada How do I do this?
  99. Trig

    IfA=340°, prove that 2cosA/2 = -(v1+sinA) - (v1-sinA)
  100. trig

    How to get 5degree without using calculator using identities?
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