# Trig check my work please?

90,437 results, page 50

1. ### English

I need someone to check my answer on this question in an English quick check. Thanks :) 1. In adventures of huckleberry finn what is unusual about the house Huck and Jim find? A. it is completely empty B. it is floating C. there is no furniture I think A?
2. ### 5th math

Nia scored 21 points in the game. If she scored 13 points in the first half of the game, how many points did she score in the second half? I subtract 21 from 13 and got 7? To check my work I added 13+7 and got 20?
3. ### Phyics help

I have a few physics questions: 1. How much mechanical work is done by a weightlifter holding a mass of 100 kg, 2.0m above the floor for 3.0 s? Explain ur answer. 2. Calculate the force needed to do 2.0 kJ of work to push a load of bricks 10m? 3. A carpenter applied a force of...
4. ### Algerbra

solve for x ac+x=xy have all terms with x on one side ac=xy-x take x as common factor ac=x(y-1) now solve for x 25a^2 - 9b^4 can u please help me solve and check these equations
5. ### Math 8R - HW Qs. Check

Write the product of (1.7 x 10 to the 9th power) x (1.4 x 10 to the 2nd power) in scientific notation My Answer - 2.38 x 10 to the 11th power am i correct and please reply this post
6. ### trig

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

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

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

Solve without using a calculator or tables cos(5pi/6 + pi/4) Thank you Reiny!:)
10. ### 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
11. ### trig

How do you find all the solutions of the equation in the interval [0,2π)? 3tan^3x=tanx
12. ### 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
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. ### trig

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

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

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

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

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

Express each value as a trigonomic function of an angle in quadrant I: Cot(-660)
20. ### 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!
21. ### gr 12. advanced functions

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Use the double angle formula to verify the identity cotxsin2x=1+cos2x
40. ### trig

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

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

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

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

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

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

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

Expan each of the following using the compound-angle formulae:sin(x + 20degree)
73. ### 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
74. ### 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:
75. ### trig

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

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

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

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

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

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

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

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

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

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

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

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

Solve exactly over 0 ≤ θ < 2π secx + tanx = 1
88. ### 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
89. ### Trig

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

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

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

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

Rewrite the expression (tan A)(cot A) in terms of a single trigonometric ratio.
94. ### math - trig

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

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

Find the 6th term of the arithmetic sequence with a9=120 and a14=195
97. ### Pre-Calc/Trig

y=-x^2+5x+36 converting into intercept form is this the correct answer? y=(x+9)(x-4)
98. ### Trig/Pre-Calc

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

solve each equation if 0 < x < 2pi. answer must be in radians 1. 4 cos x - 2 = 0 2. 3 sec^2 - 4 = 0
100. ### Pre-calc/Trig

For each parabola, tell in which direction the graph opens. x= 1/2y^2 y= -1/24x^2