# trigonometry

2,128 results, page 4

1. ### Trigonometry

The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!
2. ### Math/Trigonometry

What is the angular displacement of 1.6 revolutions? Round to the nearest tenth.
3. ### trigonometry

what is the diameter of three circle inscribed in a triagle whose base is 50 cm.
4. ### trigonometry

express secA in terms of cotA? can you pleas say how to solve this??
5. ### Trigonometry

verify the identity: (sin^3x-cos^3x)/(sinx-cosx)=1+sinxcosx
6. ### Trigonometry

Find all solutions on the interval (0,2pi): 2-2cos^2=sinx+1
7. ### Trigonometry

Verify Identity: cos5x-cos3x=-8sin^2x(2cos^3x-cosx)
8. ### trigonometry

Evaluate and round your answer to the nearest hundredth. csc(-120o)
9. ### Trigonometry

If sinA + sinB = a and cosA + cosB = b, find the value of tanA-B/2
10. ### Trigonometry

In a right triangle, CT = 6, CA = 3, and m<CAT = 90. What is the value of cot C ? CT= hypo CA= Opp.
11. ### Trigonometry

Given triangle ABC with gamma = 61.0°, Beta = 29.0°, and b = 20.5, find the value of a. A. 9.94 B. 11.4 C. 42.3 D. 37.0
12. ### Precalculus with Trigonometry

Draw and solve any triangles satisfying alpha = 20 degrees b = 10 c = 16
13. ### Precalculus with Trigonometry

Prove or disprove the following identity: cos (x+pi/6) +sin (x-pi/3) = 0
14. ### trigonometry

find acute angle A and B satisfying secAcotB-secA-2cotB+2=0
15. ### Trigonometry

In a triangle ABC, if 2sinB=sinA+sinC and sides a+c=70, what is side b?
16. ### math

Trigonometry - determine the area of a parallelogram in which 2 sides are 10 and 13 and the angle between them is 55
17. ### Trigonometry

What are the exact solutions within the interval [0,2pi)? sin2x=cosx
18. ### trigonometry

classify the graph of the equation -4y^2+5X+3y+7=0 as a circle, a parabola, an ellipse, or a hyperbola.
19. ### Pre-Calculus/Trigonometry

Help me please, just explain. How would I find f(1)? f(1)= x; -3, -2, -1, 0, 1, 2 f(x); 3.4, 0, -1.2, 0.4, 1.3, 1.7
20. ### Math - Trigonometry

I need help proving this identity 2sin^2x - 1 = sin^2x - cos^2x
21. ### trigonometry

Solve sin(x)=−0.89 on 0≤x<2π There are two solutions, A and B, with A < B
22. ### math trigonometry

Simplify cos180*sin225*cos80/sin170*tan135
23. ### India international, Mathis trigonometry

If sec0-tan0=4 Then prove that cos0= 8/7
24. ### Trigonometry

27. Solve for all radian solutions. sinx = −2cos x
25. ### Trigonometry

A wheelchair ramp is 4.4m.It rise is 1.2m.What is it angle of elevation to the nearest degree.
26. ### Trigonometry

Find real numbers a and b such that the equation (a- 2)+(b+5)i=14+19i is true.
27. ### math

Could anyone give me the List of équations in trigonometry chapter that needs to je remmembered
28. ### Trigonometry

Write the following as an algebraic expression in u, u>0. cos(arctan(u/sqrt2))
29. ### trigonometry

find soultuion in degree, use exact value 1. cos2xcosx+sin2xsinx=-1/2
30. ### Maths Trigonometry

Solve the following equation for 0<x<2Pi: (answer has to be in radians) sec (x + [pi/10]) =-5
31. ### Trigonometry

Find the average rate of change for the function between the give values. f(x)=-4x + 8; from 1 to 2
32. ### Math (Trigonometry)

Find csc B when a - 2 and b = 7 (A detailed answer would be really helpful)
33. ### Pre-Calculus/Trigonometry

Sketch an angle in standard position 7Pie Divided by 12
34. ### trig

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

Hi,how do I find both solutions of the equation cos41 = 0.35 between degrees 0 and 360? Many thanks
36. ### Trigonometry

Solve △ABC, given a = 4.4, b = 9.1, and c = 5.7. Round your answer to the nearest tenth.
37. ### Trigonometry

Determine the number of triangles ABC possible with the given parts. b=60 a=82 B=100
38. ### trigonometry

how can i find the anti-logarithm of this number. 5.07843058944 it should be 59477.5 can show me how.
39. ### Trigonometry

rewrite the expression in terms of the first power of cosine. cos^3(x)sin^4(x)
40. ### Trigonometry

Okay, Assume the triangle has the given measurements. Solve for the remaining sides and angles. A = pi/6; a = 17.4; b = 19.6
41. ### trigonometry

Find a complex number a + bi such that a^2 + b^2 is irrational. Justify and explain your reasoning.
42. ### trigonometry

Find a complex number a + bi such that a^2 + b^2 is irrational. Justify and explain your reasoning.
43. ### trigonometry

Use De Moivre’s Theorem to simplify each expression. Write the answer in the form a + bi. {1 - i(/3)}^4
44. ### trigonometry

state the amplitude, period and phase shift of the function y=tan (20-80 degrees)
45. ### trigonometry

Calculate the perimeter of the inscribed square given that the radius of the circle is 3 feet.
46. ### Math - Trigonometry

Sketch the curve represented by the parametric equations x=3cos¦È and y=3sin¦È for 0 ¡Ü ¦È ¡Ü ¦Ð?
47. ### Trigonometry

Express 3 rad in degree measure and approximate to four significant digits
48. ### Trigonometry

Find the domain of each function. And show your steps please. f(x)=x/x^2+1 f(x)=2x^2/x-3 f(x)=Square root of 5-x f(x)=x^3/x^2-16
49. ### Trigonometry

Find the domain of the function. Write your answer using infinity and union. f(x)=x/x^2+1 f(x)=2x^2/x-3
50. ### Trigonometry

Find all solutions between 0 and 2pi to tan(x)=-Squareroot3 exactly.
51. ### trigonometry

How do you draw only the top half of a circle in parametric mode on a TI-84 calculator?
52. ### college trigonometry

verify identity: (tanx-cotx)/sinxcosx=sec^2x csc^2x
53. ### Trigonometry

Solve the equation for all values of x. -2cos²x-sin x+1=0, on the interval [0,2π).
54. ### Trigonometry

Solve the equation for all values of x. 2sin(2x)-√3=0, on the interval [0,2π).
55. ### trigonometry

Express in radians the period of the graph of the equation y = 1/3(cox^2 xâˆ’sin^2 x).
56. ### Trigonometry question?

Let ABCD be a square, and let M and N be the midpoints of BC and CD respectively. Find sin<MAN.
57. ### Trigonometry

If sinx−cosx=1/2 then cot^2 (2x)=a/ b, where a and b are coprime positive integers. What is the value of a+b ?
58. ### Trigonometry

Given that cos(3x)=acos^x−bcosx is a trigonometric identity, what is the value of a+b ?
59. ### Trigonometry

Given that cos(3x)=acos^3(x)−bcos(x) is a trigonometric identity, what is the value of a+b
60. ### trigonometry/classification of tringles

an equilateral tringle given a side 3cm long
61. ### trigonometry

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

graph y=-3sec(2x-pi/3)proved the period vertical translation and the phase shift
63. ### Trigonometry

Find the perimeter of a pentagon circumscribed about the circle that has a radius of 1.5 units.
64. ### Pre-Calculus/Trigonometry

Help please What is the slope of the line that passes through (1,0) and is parallel to y = 3x + 5?
65. ### Pre-Calculus/Trigonometry

Express the following function, F(x) as a composition of two functions and f and g. f(x)= x^2/(x^2+4)
66. ### Trigonometry

A little confused on this one... Find the amplitude and the period of h(x) = 1/2 cos (-πx).
67. ### Trigonometry

Find the exact solutions of the equation in the interval [0, 2π). (4 sin x)(cos x)=1
68. ### Trigonometry

Use a double-angle formula to rewrite the expression. 6 sin x cos x
69. ### Trigonometry

The wheelchair ramp is 4.4 m long. It rises 1.2 m. What is its angle of inclination to the nearest degree?
70. ### Trigonometry

Suppose I'm graphing a graph like j(x) = -2 sin 4x. How can I tell if the origin is an x-intercept for it?
71. ### math trigonometry

Prove the identity Sin^3X sinx*cos^2X=tanx/cosX
72. ### math trigonometry

Prove the identity Sin^3X+sinx*cos^2X=tanx/cosX
73. ### discrete mathematics

can you give an example of indirect proof in trigonometry using the identities.
74. ### Trigonometry

In a right triangle normal is 40cm,hypotenuse is 44.Find the value of base?
75. ### trigonometry

Find the length of the arc intercepted by the angle 50-degree inch in a circle of 6m
76. ### Trigonometry

Solve the equation 6sin^2 x-sin x=0 , if x belongs to the half open interval [0,2 ).
77. ### Trigonometry

Write an equation of sin with amplitude = 2, period = 2pi, and vertical shift = 5
78. ### Trigonometry

Find all solutions of the equation in the interval(0-360) Tan(0-30degrees)= -5
79. ### Trigonometry

consider the polar coordinates (3,4pi/3). Find the equivalent rectangular coordinate.
80. ### Grade 12 Trigonometry

Determine an exact value for the expression sinπ/6 tanπ/3 ÷ cscπ/4
81. ### Grade 12 Trigonometry

Determine an exact value for the expression sec4π/3*cot5π/6-tan3π/4
82. ### Trigonometry half angles

Tan75/2 ka solution dena sir lekin vistar se
83. ### Trigonometry

Given that sin^2x = 4/13, what is the cos^2x? I am so lost. I need to show my work. Please help. THANK YOU!
84. ### Trigonometry

use a calculator to solve on the interval 0 less than or equal to 0 < 2pi. 1. sin0 = 0.4 2. cos0 = 0.6
85. ### algebra and trigonometry

find the dimensions of a rectangle having perimeter 14m and diagonal of length 5m
86. ### trigonometry

Use a compound angle formula for cosine to show that cos2x = cos^2x - sin^2x
87. ### Trigonometry

How do I solve these? 1) 2sinxcosx-cosx=0 2) cos^2(x)-0.5cosx=0 3) 6sin^2(x)-5sinx+1=0 4) tan^2(x)+tanx-12=0

Find two exact values of sin(cosˉ¹√5/6)
89. ### trigonometry

what does it mean to correct to five decimal places? 0.386174381 0.707929058 0.757944616 0.205573683
90. ### Trigonometry

Express the following in radians: f.1025degrees. --> (pi/180)*1025 = -185pi/36 Is that correct or theirs another way to do it ??
91. ### Trigonometry

Express the following in radians: f.1025degrees. --> (pi/180)*1025 = -185pi/36 Is that correct or theirs another way to do it ??
92. ### Math Trigonometry

determine the amplitude and period of each function. 1) y = 3sin (2x-pi/2) 2) y = -3sin2 (x-pi/4) 3) y = 2cos (2x+pi) 4) y = -2cos2 (x+pi/2)
93. ### trigonometry

how tall is a tree if it costs a shadow 59 degrees 24 minutes 41 inches on the ground 40 meter?
94. ### trigonometry

I need help!!!! In the right triangle shown below, OG = 7, DG = 8, and m<DOG = 90. What is the measure of <G to the nearest minute?
95. ### trigonometry

what is th decimal equiavalent of three degrees of a 90 degree angle with a .1666 long base
96. ### Trigonometry

Find all solutions of the equation in the interval [0,2pi] algebraically. sin^2x + cosx + 1 = 0
97. ### trigonometry

The second hand of a clock is 3 cm long. How far does the tip travel in 2 min. 15 seconds?
98. ### Trigonometry

How do you solve the equation 5√3 secθ = 10 in degree measure? please explain.
99. ### 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.
100. ### 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.