# alg/trig

4,420 results, page 15

1. ### trig

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

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

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

How do you find all the solutions of the equation in the interval [0,2π)? 3tan^3x=tanx
6. ### Algebra II/Trig

Simplify: (n/4)/(n/m) As my answer I got: 4m Is this response correct? If not, please let me know what I did wrong.
7. ### trig

Prove the identity. (must work with left side) (1-2sin(x)^2)=(cos(x)^2)
8. ### 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
9. ### 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
10. ### trig

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

Find all solutions of the equation 2sin^2x-cosx=1 in the interval [0,2pi) x1= ? x2=? x3=?
12. ### function and trig.

(1/x - 3/x+4) / 1/x square -16 please help me with this question if you can show the work or explain how to solve. thank you
13. ### TRIG

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

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

simplify using properties of exponents ? (2y^1/5)^4 ---------- y^3/10 what would that be please hlepp
16. ### Calculus (trig stuff)

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

Express each value as a trigonomic function of an angle in quadrant I: Cot(-660)
18. ### 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!
19. ### gr 12. advanced functions

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Use the double angle formula to verify the identity cotxsin2x=1+cos2x
38. ### 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])
39. ### trig

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

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

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

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

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

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

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

Find the following cot(Arccsc 25/24) show your work
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

Solve for x if sin2x=cos(x+60 and x€ [-90,180].show all work details
73. ### trig

Expan each of the following using the compound-angle formulae:sin(x + 20degree)
74. ### 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
75. ### 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:
76. ### trig

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

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

y=sec(2x+1) Find the period and phase shift. Sorry i'm really bad at these.
79. ### alg2/trig

If 4x^2+9=kx, what value of k will produce equal roots? the answer is 12 but i don't understand how you get it, please help!
80. ### Trig

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

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

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

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

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

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

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

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

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

help please!: (sinx + sin2x +sin3x) / (cosx + cos2x + cos3x) = tan2x
90. ### Trig

Solve exactly over 0 ≤ θ < 2π secx + tanx = 1
91. ### 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
92. ### Trig

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

Use sum and difference identitites to find the exact value of co 15 degrees
94. ### TRIG

determine the sum of the first 100 even integers SHOW YOUR WORK
95. ### trig

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

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

Rewrite the expression (tan A)(cot A) in terms of a single trigonometric ratio.
98. ### TRIG,

Can you solve and show me the work in these two equations? cos(3x)=-1 tan (theta)=-1
99. ### math - trig

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

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