# 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).

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