trigonometry

2,128 results, page 5

1. trigonometry

A ship sails 15.0 mi on a course S40°10’W and then 21.0 mi on a course N28°20’W. Find the distance and direction of the last position from the first.
2. trigonometry

how do i determine the point of intersection of a circle with a radius of 14 and the line coming in at a 35 degree angle
3. Trigonometry

. Which of these standard trigonometric functions has the least period? A. cosine B. cosecant C. tangent D. secant
4. Trigonometry

. Which of these standard trigonometric functions has the least period? A. cosine B. cosecant C. tangent D. secant
5. Trigonometry

Using the Law of Cosines, how can I show that the measure of each angle of an equilateral triangle is 60 degrees?
6. Trigonometry

find sin2x, cos2x, and tan2x if sinx= -2/sqrt 5 and x terminates in quadrant III
7. Pre-Calculus/Trigonometry

Help please Which of the following is the equation of a line that passes through the points (2,5) and (4,3)? y = -x + 7 y = x + 7 y = 2x + 5 y = -2x + 5
8. Trigonometry

16 sin^2 x = 16 − 8 cos x Find all solutions of the equation in the interval [0, 2π)
9. Math Trigonometry

A man is 6 ft. tall casts a shadow of 8 ft. find the angle of elevation of the sun.
10. trigonometry

find the radius of a circle in which a 59 foot chord subtends an angle of 12 degree at the center
11. Trigonometry

Find the length of the shadow of a 50 ft vertical pole when the angle of elevation of the sun is 28 degrees
12. trigonometry

I need help solving this problem. Question: At what points will the line y=-x intersect the unit circle x2+y2=1?

14. Trigonometry

A wheel has a 12 inch radius rotating at 620 RPM. What is the speed of the car in MPH?
15. Trigonometry

Solve: tan(2theta - 34deg)= sqroot3; theta = [real numbers of degrees]
16. Plane trigonometry

Hi, could you help me solve the one cycle graph and the 5 points of this equation: Y=2sin pi(x+1/2)+1 thank you in advance!
17. Trigonometry

How do I solve these linear system problems? I solved it many times but it never seems right. 1. x^2 + y^2 =9 2x - y = -6 2.x^2 - x -y =0 x - y = -3 3. 2x^2 - x - y = -1 3x + y = 5
18. trigonometry

find the radius of the circle whose sector area is 426 sq.cm. and central angle 24
19. Trigonometry

Is the given equation an identity or a conditional eqution sin(-x) tan(-x) + cos(-x) = sec x
20. trigonometry

A ship sails 15.0 mi on a course S40°10’W and then 21.0 mi on a course N28°20’W. Find the distance and direction of the last position from the first.
21. Trigonometry

Determine the angular velocity if 2.5 revolutions are completed in 10 seconds. Round to the nearest tenth.
22. maths trigonometry

Expand the following using compound angle formulae Sin(m-n) Cos(p-55)
23. Maths, triangle trigonometry

P, Q and R are three fire towers. Q is 40 km N 72°E of P and R is 48 km S 55° E of P. Find the distance between R and Q and bearing of R from Q.
24. Trigonometry

what is the angle of elevation of the sun if the shadow of a 5'7" tall man is half the length of his height?
25. trigonometry

find the number of radians in the central angle that subtends an arc of 6m on a circle of diameter 5m
26. Math - trigonometry

Point P (8, -4) is on the terminal arm of angle theta What quadrant would this be in? Cosine?
27. Trigonometry

FInd the arc length intercepted by a central angle of 46 degrees 24'6" in a circle with a radius of 35.62m
28. Algebra And Trigonometry

After finding the values by using half angle formula, how to determined the quadrant
29. math/trigonometry

solve secx/2=cosx/2 over the interval[0,2pi) without using a calculator
30. Trigonometry

find (acute) angle A, given: a. sin A = 0.4919 b. tan A = 2.7775 c. cos A = 0.5757

I'm having trouble ordered triple in algebra 2 w/ trigonometry, could someone please hellllllllllllllllllp me!
32. FST (functions, stats, and trigonometry)

what is the equation for the axis of symmetry for the function f(x)=IxI?(absolute value)

find, to the nearest minute, the angle whose measure is 3.45 radians.
34. Trigonometry

What is the exact value of the cos of 23pi/12? (Twenty-three pi over 12, which is = to 345 degrees.) Thank you, Roger
35. Algebra 2 with trigonometry

2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx
36. Algebra 2 with trigonometry

2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx
37. trigonometry

Find the length of the arc that subtends an angle of measure 70 degrees on a circle of diameter 15 centimeters.
38. Trigonometry

Suppose the angle formed by the line 14y = 23x and the positive x-axis is è. Find the tangent of è.
39. Trigonometry

Find the angle of elevation of the sun when a tree that is 10 yd tall cast a shadow 14 yds long
40. trigonometry

state the amplitude, period and phase shift of the function y = tan (2 theta- 180 degrees)
41. trigonometry

Find the radius of a circle on which a central angle of 3 pie over 2 radians subtends an arc of 60 ft.
42. Trigonometry

Show algebraically how to confirm that cos2x=cos^2x-sin^2x using the sum and difference identities
43. Trigonometry

Solve tan2 x + tan x – 1 = 0 for the principal value(s) to two decimal places. Please Explain
44. Trigonometry

Solve each triange given the indicated measures of angle and sides b=43degrees y=36 degrees a=92cm
45. trigonometry

Determine the area of triangle ABC, given the following information c = 40m b = 20m A = 48deg
46. trigonometry

At what angle to the x-axis does the graph of y=sin x pass through (0,0)? Give numerical and visual evidence.
47. Trigonometry

triangle ABC is isosceles, with AB=AC=15cm , and m<A = 150. What is the exact length of BC without using trigonmetry?
48. Trigonometry

Which of the following is not a solution of the equation tan squared A =3? (1) -pie/3 (2) 2pie/3 (3) 5pie/6 (4) 120 degrees
49. Math trigonometry

Find the measures of the acute angles of a right triangle whose legs are 9 cm and 16 cm long.
50. Trigonometry

Let N be a 5-digit palindrome. The probability that N is divisible by 4 can be expressed as \frac{a}{b}, where a and b are coprime positive integers. What is the value of a+b?
51. TRIGONOMETRY

Use the dot product to determine which of the following vector pairs are orthogonal. a. v1 = (-5,5) and v2 = (1,1) b. v1 = (154,169.4) and v2 = (88,64)
52. trigonometry

To the nearest degree what is the angle formed with the ground by a 32 ft ladder if it is leaning against a wall at a height of 28 ft?
53. trigonometry

rewrite each equation in rectangular form and describe the graph. solve for y if possible. a. theta = pi/6 b. r=8costheta
54. Trigonometry

Determine exact solutions for each equation in the interval x E [0,2 pi] sin^2x - 3/4 = 0 *3/4 is a fraction 2tan^2x - square root 12 = 0
55. Trigonometry

An aeroplane flies 200km on a bearing of 137 degrees. How far east of its starting point is it?
56. Trigonometry

Use the trigonometric subtraction formula for sine to verify this identity: sin((π / 2) – x) = cos x

58. Trigonometry

find an equation of the line passing throug (2,6) and is inclined at an angle 60 degrees counterclockwise from the horizontal
59. Trigonometry

Find the remaining trigonometric values if sin=-3/5 and theta terminates in Quadrent four. I'm not sure what they're asking
60. trigonometry

Angle A is in standard position and terminates in quadrant IV. If sec(A) = 4 3 , complete the steps to find cot(A).
61. Trigonometry

Can someone please help me explain in words how to what each piece of the equation modifies the whole thing in this: f(x)=-3csc(2x)+1
62. Trigonometry

I'm supposed to find the angle reference for a degree of 0. I think the answer is 180 degrees. Is that correct?
63. math-geometry-soh-cah-toa???

Thank you for using the Jiskha Homework Help Forum. Hopefully the following sites will help you: 1l http://www.mathwords.com/s/sohcahtoa.htm 2. http://en.wikipedia.org/wiki/Trigonometry I get how to use soh-cah-toa and everything but could someone help me with how to plug it ...
64. Trigonometry

How do you figure out the exact circular function value of sec(23pie/6)? *I don't know how to get the [pie]symbol on my keyboard
65. Trigonometry

Use the cofunction identities to find an angle x that makes the statement true: tan(2x-140) = cot(x+5)
66. trigonometry

this question confused me can you please show me how its done. Reduce (csc^2 x - sec^2 X) to an expression containing only tan x.
67. Trigonometry

how do you solve for y=sinX+2. just the phase shift and period. even how to graph if anyone knows. i got stuck with this one
68. trigonometry-math

what is the solution set (in terms of pi) of the equation sin2t-cos^2t=1=sin^2t+sint in the interval 0<t<2pi
69. Trigonometry

Given that circle A has a radius of 52 and a radii AB and AC form an angle of 132 degrees, find the exact length of BC
70. Trigonometry

Liola drives 13 km up a hill that is at a grade of 10 Degrees what horizontal distance to the nearest tenth of kilometer has she covered
71. Trigonometry

Solve the equation sin^2x-cos^2x=0 over the interval [0, 2pi). Having trouble getting started.
72. Trigonometry

Fine the complete exact value of sin x = -sqrt3/2. I'm very lost as to how to even begin this problem.
73. Trigonometry

How much work is done by raising a 117-lb box vertically 18.0 inches? A. 5,190 ft-lb B. 2,110 ft-lb C. 25,300 ft-lb D. 176 ft-lb
74. Trigonometry

write sin(125degrees) in terms of its cofunction. Make sure your answer is a function of a positive angle.
75. Trigonometry

Find all values of x such that sinx+sin2x=0 and 0 <= x <= 2pi <= means less than or equal to please help!
76. Trigonometry

How do you find the exact value of cos -7pi/12 without using a calculator to change radian to degree
77. Math Trigonometry

What is the maximum integer value of n, where n<148, that satisfies the following inequalities: sin(pi/2+(pi*n)/74)<0 and tan(pi−(pi*n)/74)<0?
78. Trigonometry

Write sin(125°) in terms of its cofunction. Make sure your answer is a function of a positive angle.
79. Trigonometry

Write sin (125°) in terms of its cofunction. Make sure your answer is a function of a positive angle
80. Trigonometry

Write sin(125°) in terms of its cofunction. Make sure your answer is a function of a positive angle.
81. Trigonometry

The area of a rectangle is a function of the length when the width is unity. Please answer.. My mind is going crazy ):
82. Trigonometry

find the perimeter of an isosceles triangle whose base is 20cm and the vertex angle is 120 degrees.
83. Pre-Calculus/Trigonometry

Am I right? Which of the following is the equation of a line that passes through the point (3,2) and is parallel to the y-axis? y = 3 x = 2 y = 2 x = 3 <---
84. Pre-Calculus/Trigonometry

Solve the following system of equations algebraically. Verify your solution by using matrices. 3x-y=0 5x+2y=22
85. Trigonometry

For all values of x for which the expressions are defined, prove the following equation identity 2/sec = 2-2 sin^2 x/ cos x
86. Math: Trigonometry

Find the sum of the three smallest positive values of x such that 4cos^2(2x-pi) = 3. (Answer in radians.)
87. Trigonometry and Right Triangles!

The length of the hypotenuse of a 30 60 90 triangle is 16. What is the perimeter? I'm just learning about this. Can someone explain?
88. Trigonometry

The function in the graph has the general equation f(x)=asin(bx+c)+d. Which of the following values are correct? Select all that apply d=-3 C=-1 B=0.5 B=0.5 D=1 A=2 B=2
89. Trigonometry

Evaluate sin^-1(square route of 2over2) give the answer in radians. Please i really need this question. can you help me?
90. Algebra

I am doing the amount of permutations in the word trigonometry. For the expression, I wrote 12!/2!2!2!. I got 968003200. Is this correct? If not, should I use parenthesese? Thanks
91. Trigonometry

this is a propf and I need both sides to equal each other. Thanks this one stumped me. sin^3x/(1-cosx) = sinxcosx+sinx
92. Trigonometry

What's the easiest way to remember how to draw the graphs for the common trigonometric functions, like sin cos and tan?
93. Trigonometry

How do I find all solutions in the interval [0,2Pi): sin2x=cos2x answer choices are: a.)Pi/8 b.) Pi/8, 5Pi/8, 9Pi/8, 13Pi/8
94. Trigonometry

If sin A= -3/5 and angle A is in quadrant IV, find cos A. I know i have to use the pythagoream identity..but i keep getting stuck.
95. Trigonometry

Find the area of a sector, given a central angle of 240degrees and a radius of 15 cm. Round your answer to the nearest tenth.
96. Trigonometry

The angle of elevation of the sun is 20 degrees. At the same time,how long is the shadow cast by a building 50 meter high?
97. Trigonometry

Find the angle of elevation of the sun when a tower 100m high casts a shadow of 120 meter long?
98. trig

Ok, so im brand new at trigonometry. If i have a right triangle with an acute angle of 30° an opposite side of 4 and a hypotenuse of x how do ii find x
99. Trigonometry

Solve. 2sin(2ƒÆ) + ã3 = 0 interval [0, 2ƒÎ) How do I start this? I feel like maybe Trig Identities, but I'm not really sure.
100. trigonometry

refer to the graph of y=sin(x) or cos(x) to find the exact values of (x) in the interval [0,4pi]that satisfy the equation. 4sin(x)=4