# alg/trig

4,424 results, page 17
1. ## Trig

Determine the roots of the function f(x)=-2cos(3x)-1. Can you please show all the work so it is easier to understand, thank you!!
2. ## Trig

Find the amplitude, period, and phase shift of the following function: y=-2cos2(θ+45)
3. ## Trig

The graph of y = 7cosx + 24sinx would be a sinusoid if it were plotted. What would be the first positive value of x at which there is a high point?
4. ## trig

Find the numerical value of cos(60degree) + cot(30degree): (A) 1/2 (B) 3p3/2 (C) 12 +p3 (D) 52p3 (E) None of the above.
5. ## math trig

If a ferris wheel has a radius of 20.5meters, how tall would a 45 degree angle be?
6. ## trig

Find the 6 trigonometric function of teta if it's terminal side passes through the point(1,2)
7. ## trig

how much force is necessary to stop a 2500 pound car from rolling down a 40degree slope
8. ## trig

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

find cos x/2, sin x = 1/4, 360 < x < 450, use half-angle identity
10. ## Purdue Trig

A spherical balloon is being inflated so that radius is increasing at a rate of 10 mm/sec.
11. ## trig

the mini tent of the clock is 5 cm long.how far is the tip of THE HAND TRAVEL IN 35 MINS.
12. ## trig

solve for x 6tanx - 4sinx = 1 i tried it but got a quartic formula :S 16sin^4x + 8sin^3x + 37sin^2x - 36 = 0
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. ## Inverse Trig

How do I simplify arcsin (sin 6 pi) given the interval 0 ≤ theta < 2pi
15. ## trig

Write the following equation in standard form and identify the type of conic: 9y^2 - 4x^2 + 8x + 18y + 41 = 0
16. ## Trig

I was just wondering if anyone can explain the Law of Sines- "Ambiguity Case" to me, in a way that is easy to understand.
17. ## trig

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

on the same set of axes sketch the graph of f(x)=sin2x and g(x)=2sin x for x (o,180 degrees)
19. ## 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
20. ## trig.

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

Find the exact value of the trigonometic function at the given real number of cot(5pi/3)
22. ## Trig

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

finnd a possible measure of the angle drawn in standard position that passes through the points (ã2,-ã2)
24. ## Calculus/ trig

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

which of the following sets gives the x coordinates where the parabola y=x^2+4X-50 and the line y=7x-10 intersect when drawn in the coordinate plane
26. ## Math-Trig

Find all angles in degrees that satisfy each equation. tan(a)+rad3=0
27. ## trig

Give an equation of a cosine function of x which has a phase shift along x of -1 unit and a wavelength of pi/3
28. ## trig

Give an equation of a cosine function of x which has a phase shift along x of 5 units and an amplitude of 4
29. ## Trig

Using a double angle formula how would you find the exact value of this expression? Cos²105° - sin²105°
30. ## math

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

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

show that cos(pi x) = pi cosx is not an identity by finding a single value of x for which it fails to hold.
33. ## Trig

Evaluate tan(a-b). No decimals. Only exact answer. Sin a = -7/25, cot b = -8/15 neither a nor b are in quadrant IV.
34. ## maths trig

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

Use an addition or subtraction formula to simplify the expression: tan(2−u)=cot(f(u)).
36. ## trig

half angle formula to find exact value cos 112.5 degree
37. ## trig

Given tan A = .29 find the angle A in degrees. Round your answer to the nearest hundredth.
38. ## 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:
39. ## Trig

Evaluate tan(a-b). No decimals. Only exact answer. Sin a = -7/25, cot b = -8/15 neither a nor b are in quadrant IV.
40. ## identities trig?

find all solutions to the equation in the interval [0,2pie] cos2x=cosx
41. ## trig

which of the following sets gives the x coordinates where the parabola y=x^2+4X-50 and the line y=7x-10 intersect when drawn in the coordinate plane
42. ## Math - Trig

Explain why we cannot solve an oblique triangle with the Law of Sines given SAS.
43. ## trig

A wheel rotates at 100 revolutions per second. find the angle velocity in radians per second.
44. ## Trig

Solve the equation on the interval 0 less than or equal 0 < 2pi. 1. sec 30/2 = -2 2. cos(20 - pi/2) = -1 3. tan(0/2 + pi/3) = 1
45. ## Math/Trig

Find two exact values of sin(cos­­ˉ¹ √5/6)
46. ## math (trig)

Im having problems solving this equation: 2sin(x) = cos(x) + 2 I keep getting an imaginary number..:/
47. ## trig

How do I find the exact value of sin2x when secx is equal to the negative square root of three
48. ## trig

Given that sin x = - ã2/2 and that cos x is negative, find the other functions of x and the value of x. can you explain how this problem can be solved please.
49. ## TRIG

A 5.5 ft tall woman casts a 6.2 ft shadow. Find the angle of elevation of the sun.
50. ## Pre-Calc/Trig...

Am i correct? A vertical shift is an example of a non-rigid transformation. True
51. ## Pre-Calc/Trig

Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5
52. ## Trig

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

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

Graph one period of the following function. Show all work . y=2sinx+2cosx
55. ## trig

evaluate the expression below at t=4 p=\$400 and r=-9% round youre answer 2 decimal place
56. ## Trig

Find the exact value of the trigonometric function given that sin u=3/5 and cos v=-8/17. Both u and v are in quadrant II. Tan (u+v)
57. ## HELPPPPPPP (TRIG)

solve the equation 2 sec x- tan x = cot x for the interval 0 to 360 please:)
58. ## Trig

We started a new lesson on Monday on identities. Our test is tommorrow. I have no idea of what I'm doing! Can somebody help me study?
59. ## Alg2/Trig

Write the log as a single function: logx + 2logy - logz
60. ## 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])
61. ## Pre-Calc/Trig...

Help me please Is the given linear expression a factor of the polynomial? Show work. f(x)=2x^3+x^2-5x+2; x+2
62. ## Trig

There is an airplane at an altitude of 12000 ft. The angle of depression is 1 degree. How far on the ground is the plane.
63. ## gr 12. advanced functions

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

use a half-angle identity to find the exact value of tan 105 degrees.
65. ## Trig

sin45cos25 + cos45sin25 = ?? a. cos70 b. sin70 c. cos20 d. sin 20 which answer is correct ??
66. ## trig

a voltmeter's pointer is 3 cm in length. find the degrees through which is rotates when it moves 1.1 cm on the scale?
67. ## trig

If x and y are complementary angles and 5 tan x-12=0,calculate by using a diagram the value of 2sin(squared)x+cos y.
68. ## Trig

Verify and identify, I am so confused on how to do this? this is an extra credit but I am lost, please help. cot(Ý-ƒÎ/2)=-tan Ý
69. ## trig

Rewrite 8 cos2 x as an equivalent expression that does not contain powers of trigonometric functions greater than 1
70. ## trig

find all values of theta in the interval (0,360) that have the given value: sintheta= √2 ______ 2
71. ## trig

Find the exact solutions of the equation in the interval [0,2pi). sin(x/2)+cos(x)=0
72. ## Trig

Find the exact value of: sin405. reference angle=225 sin225= -.707106781 = -.71

74. ## Trig

Find the exact trigonometric function of cos(2a). hyp: 17 opp: 15 adj: 8
75. ## trig

if the terminal ray of an angle 0 in standard position passes through the point (-1,3),then cos0=
76. ## Trig/Pre-Calc

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

findall exact solutions ( in terms of radians) to the equation 2cos(40)-radical 3 =0
78. ## Algebra/trig

How would i use my calculator to find the approximate value of the expression, cot 0.2748 rad
79. ## 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.
80. ## trig

Rewrite cos4x as an equivalent expression that does not contain powers of trigonometric functions greater than 1.
81. ## trig

Find the exact value of the trigonometric function: sec(-pi/12) I am not sure how to answer this off the unit circle.
82. ## trig

Find the altitude of an isosceles triangle whose base in 30 cm vertex angle is 75 degres

84. ## trig

find a value of interval in degrees cotalpha=1.3692847 alpha=0.023903 is that correct?
85. ## TRIG!

true or false, the two sets of parametric equations x=t, y=t^2+1 and x=3t, y=9t^2+1 have the same graph. justify your decision.
86. ## precalc/trig

Write the partial fraction decomposition of the rational expression. 4x^2–19x+31/ (x+2)(x^2–4x+5)
87. ## alg

simplify: sqrt (6/11) a) sqrt (66/11) b) 6 c) 6 sqrt (11/11) d)6 sqrt (11)
88. ## alg

Solve for u: u − 2/ u − 4 + 6 = u + u − 6/ 4 − u
89. ## Pre Alg (Check my work?)

1.) In which Quadrant is the point (x,y) located if x is negative and y is positive? II III IV (MY ANSWER) I 2.) Point A(5,-10) is reflected over the Y axis. Write the coordinates of A'. (-8,-10) (8,10) (8,-10) MY CHOICE (-8,10) 3.) At the half-tame show,
90. ## Alg 1

The largest town square in the world is Tiananmen Square in Beijing, China, covering 98 acres. A. 1 sq mile is 640 acres. Assuming that the Tiananmen Square is a square, how many feet long is a side to the nearest foot? B. To the nearest foot, what is the
91. ## AP calculus BC

hello i know that deriv(cscx) = -cscxcotx and that deriv(cos) = -sinx deriv(cotx) = -((cscx)^2) my question is: is this (statements below) correct? antideriv(cscxcotx) = -(cscx) antideriv(sinx) = -cosx antideriv((cscx)^2)= -cotx were those antiderivatives
92. ## math

How to solve for delta using trig functions? i.e. cosine sine tangent secant Thank you I'm not sure what delta you're referring to. Could you please elaborate some for us. What is it you're trying to do with the trig funtions? the problem is.. limit sec
93. ## Alg 1

Landon is standing in a hole that is 6.5 ft deep. He throws a rock and it goes up into the air, out of the hole, and then lands on the ground above. The path of the rock can be modeled by the equation y = -0.005x^2 + 0.45x - 6.5, where x is the horizontal
94. ## trig

I get that we have to put it into radical form, but I don't understand the process. Can someone walk me through it and explain it? arccos(-1/2)
95. ## trig

write an equation expressing 19cos(theta-50degrees) as a sum of sine and cosine.
96. ## Trig

How do I simplify this? cos4xcos3x-sin4xcos3x I pulled the cos3x out as a common factor but that doesn't really help. Can someone please direct me on this. Thanks!
97. ## Trig

Convert the polar equation to rectangular form. r=4cos-4sin What I have so far: r^2=4rcos-4rsin x^2+y^2-4x+4y x^2-4x+y^2+4y=0
98. ## Trig

Using this graph: imgur [dot] com/utSgKI9 Find the measures of angles A and G in the drawing (m is parallel to n) if C=4x-18 and F=2x+34
99. ## Pre-Calc/Trig

Describe the end behavior for function by writing a limit expression. f(x)=2x^5-x+7
100. ## calc/trig

A 84-ft tree casts a shadow that is 130 ft long. What is the angle of elevation of the sun?