# Trig check my work please?

90,505 results, page 45

1. ### trig

write sin4xcos2 as the sum or difference of two functions.
2. ### Trig

Find sin2theta, cos2theta if csctheta=13/12 and lies in quadrant II. Thank you!
3. ### Alg/Trig

Write an equation of a circle with center (2, 3) and radius 4.5.
4. ### trig

Find all solutions in the interval [0,360) sin(4t)=ã3/2
5. ### trig

Solve the equation on the interval [0,360) cos^2t+2cos(t)+1=0
6. ### TRIG

Find one numerical value for cot x/cos x = 5
7. ### trig

use pythagorean theorem to solve for the value of x and y of a 60-60-60 degrees.
8. ### trig

solve for the value of sine and cosine function of 60 degrees.
9. ### trig

solve for the value of sine and cosine function of 60 degrees.
10. ### trig

Express sin4xcos3x as a sum or differences of sines and cosines
11. ### Trig

the number of solutions of sin x= -sqrt3/2 for x between 0 and 2pi
12. ### Trig

True or False: For a trignometric function, y = f(x), then x = f^-1(y). Explain your answer. Thanks.
13. ### Trig

If 180<A<270 and sinA= -radical(5)/3, find tan(1/2)A.
14. ### Trig

prove that tanA divided by the sinA equals the secA
15. ### Trig

How do I use the unit circle to evaluate tan(-3pi/4)
16. ### Math: Solving Trig Equation

9tan (x) - 9 sec^2 (x)/ tan (x)
17. ### trig

cos(t)=3/5 determine the exact value of t to the nearest degree
18. ### trig

Identify the quadrant in which θ lies. sin > 0 and tan < 0
19. ### trig

Solve the right triangle with the given sides and angles. a = 3.0, B = 31.0°
20. ### trig

Solve the equation. Express your answer in trigonometric form. x^5 - 11 = 0
21. ### trig

simplify the expression. (sin^2x+cos^2x) - (csc^2x-cot^2x)
22. ### trig

simplify the expression. cos^2x+sin^2x/cot^2x-csc^2x
23. ### trig

Given that P=(-1,8) and Q=(-2,1), find the component form and magnitude of the vector 3 PQ.
24. ### algebra 2 trig

if log3=a then log300 can be expressed as? 1) 100a 2)a+2 3)100+a 4)3a
25. ### trig

if sin and sec of theta are less than zero what quadrant is it in
26. ### trig

Find all the solutions from [0, 2pi] cot^2x+csc=x
27. ### trig

16cos(x)-3sec(x)=0 Find all solutions for x in [0, 2pi)
28. ### Help me trig.

solve the equation in the interval [0,2pi) tan (t/2)-sint=0
29. ### trig

In right ∆LMN, sin M = 0.759. What is cos N?
30. ### Trig laws

Given the area ABC=7.52m©÷. Find a, when m¡ÐB=40¡Æ and c=6m.
31. ### Pre-Calc/Trig

What are the polynomial names for these functions. 1.) m(x)=x+x^2-1 2.) d(x)=x+ 3.14 3.) 2-6x^2+11x^3
32. ### Pre-Calc/Trig

is the integer n odd or even, explain
33. ### trig

rewrite each equation in polar form. solve for r if possible a. 2x+3y=5 b. y=1/2x
34. ### Pre-Calc/Trig...

Write the equation y = bx in logarithmic form.
35. ### Pre-Calc/Trig...

Use the rules of logarithms to expand [(x+3)^4(x-5)^7]
36. ### Trig/ English

I need an Acrostic poem for the word "Exponent"
37. ### Calculus

Integration with trig functions Integral of [(1-sinx)/cos^2x] dx
38. ### math trig

Solve for x if 3sin2x - 3sinx = 2 - 4cosx 0<x<180
39. ### trig help

simplify cosec40(sin40+sin80+cos120) help step
40. ### trig help

simplify cosec40(sin40+sin80+cos120) help step
41. ### Trig

What are the focus and directrix of the parabola represented by the equation:8(y-6)=(x+2)squared?
42. ### Trig/PreCalc

Find the interior angles of the triangle with vertices (-4,1), (1,-6), and (5,-1)
43. ### Trig/PreCalc

Find a parametrization for the line segment with endpoints (5,2) and (-2, -4).
44. ### trig

If tanx + cotx =5 tgen find tan^2x +cot^2x
45. ### Calculus 2 / Physics

An underground tank full of water has the following shape 1) hemisphere of radius 5 m at the bottom 2) a cylinder of radius 5 m and height 10 m in the middle 3) a circular cone with base radius 5 and height 4 m at the top The top of the tan is 2 m below the ground surface and ...
46. ### calculus 2 or physics

An underground tank full of water has the following shape 1) hemisphere of radius 5 m at the bottom 2) a cylinder of radius 5 m and height 10 m in the middle 3) a circular cone with base radius 5 and height 4 m at the top The top of the tan is 2 m below the ground surface and ...
47. ### Chemistry

Balance the equation: NO2- (aq) + Al (s) --> NH3 (g) + AlO2- (aq) (basic solution) ** please note the "2-" on the NO2- and AlO2- are not subscripts, they are the charges. I missed a few classes in Chemistry and find myself lost. I have tried to learn these equations with ...
48. ### help me please 14th amendment

explain how the court has interpreted the fourteenth amendment to apply the bill of rights to the states. i have visited all the websites but i'm not sure of what they are saying. i was wondering if someone could summarize in simpler words. here's what i came with: the 14th ...
49. ### Algebra

I have some problems that I am having trouble with and I have some that need checking please. Thanks! Solve the equation. 4. (x+7/4)=2(x-1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. (x-8/2x) +5= (x+6/x) Solve the equation. 7.(x/...
50. ### check math

Here are my answers. Can you check if I got the right answers? Thank you! (x+3)(x-3)>0 answer: x<-3 or x>3 x^2-2x-15</=0 answer: -3</=x</=5 12x^2=3x answer: x=1/4 sin2x=sinx, 0</=x</=2pi answer: x=pi lx-3l<7 answer: (-oo,oo) (x+1)^2(x-2)+(x+1)(x-2)^2...
51. ### Math

Which Is More Correct? A Watch That Doesn't Work At All Or A Watch That Loses A Minute Each Hour? BTW It's a Trick Question😉 All I have is the one that loses a minute each hour because it's logical reasoning but I just wanted to double check
52. ### Physics

Hello, I really don't get something about work and I would like that someone help me, Please. .. Well I have an exercise about two objects that are connected by an ideal rope that pass through a pulley that has a moment of inertia, so my problem is: when I use "energy" to get ...
53. ### English

Thank you very much. I still have a few questions. 1) Your sentences are confused and sometimes disconnected. Check the spelling in the dictionary before writing a word and make sure you are using tenses correctly. 2) White people failed (their mission) because they didn’t ...
54. ### English

This is a thank you letter to a company. Please check it and let me know what you think. If I need to change something or its just fine. Check for any errors. Thank you very much for taking the time to meet with me on April 14 regarding the position of Administrative Assistant...
55. ### science

A group of wind turbines operates in an open field. Which statement about the wind turbines is true? Answer A. The wind turbines produce movement of air that does work. B. The wind turbines do work by using electricity to produce power. C. The wind turbines cannot do work ...
56. ### Algebra

Can someone help me with this please. Andrew factored the expression 20x^3-12x^2+8x as 4x(5x^2-12x^2+8x) but when melissa applied the distributive law and multiplied out 4x(5x^2-12x^2+8x)she got 20x^3-48x^3+32x thus Andrews solution does not appear to check. Why is that? ...
57. ### Math

1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the brother’s age in five...
58. ### chem

λ for one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value using n1 = 2, and n2 = 5. I am not certain of your difficulty here. Can you amplify? How did you make the symbol for lamda? (1/lambda) = R(1/n1^2...
59. ### Matt 115

Hello, I just wanted to know if someone could check my work to see if they are right or wrong. Thanks :) 5. Find 2/5 of 4/11. Answer: 8/55 8. Are 3/21 and 3/54 equivalent fractions? Answer: No 14. Write in decimal form 8 583/10,000 Answer: 8.0583 22. Solve for the unknown: 8/...
60. ### Math

which mountains peaks can be seen from Oahu. Island Distance(Mi) Mountain Height(ft) Molokai - 40 - Kamakou - 4,961 A) Radius of earth= 3960 mi. Determine angle formed at the center of the earth. B) Determine length of the hypotenuse. Could someone go through the steps to ...
61. ### Check My work ( math)

1.) Years: 1 2 3 4 5 6 7 8 Height: 2.1 3.2 6.8 7.3 11.2 12.6 13.4 15.9 about about tall would you expect these trees to be after 22 years ? a.)22.31 ft b.)35.2 ft c.)44.25**** d.)46.2ft 2.)temp:68 77 83 85 89 94 96 99 number of cones:403 447 457 465 489 503 543 576 what is the...
62. ### physics-please check

is this right?: when a form of energy changes from one form to another some energy may transfrm into a useful form, those useful form of energy is high grade energy.while the rest of the energy will always change to form we cannot use.which is called the low grade energy. if i...
63. ### Plz help check my answer!!?

The commute times during rush hour traffic on a local interstate have a mean of 25 minutes and a standard deviation of 5 minutes. Repeated studies of this section of interstate are considered normally distributed. What percent of commuters drive between 20 - 25 minutes to work...
64. ### English

1. If you don't work hard, you will be poor. 2. If you don't work hard, you will become poor. 3. If you don't work hard, you will get poor. 4. Unless you work hard, you will be poor. (Which expressions are commonly used? Can we use all the expressions?)
65. ### Science AZ

Define what is meant by the terms initiative and referendum as they are used in the Arizona Constitution. Please check the Government definition of "initiative" in this online dictionary. http://dictionary.reference.com/browse/initiative Then click the "referendum" link in the...
66. ### English

Hi, I need to cite a source for a paper but I cant tell whether its a paper or an article or an article from a journal or book. Can you please help. "title of work" author from jump cut, no 27, July 1981, pp 27-32 copyright Jump Cut: A review of Contemporary Media, 1982, 2005 ...
67. ### A Raisin in the Sun

In what way does Mama show herself to be stronger than her children? (Please check the following): Mama is willing to give up her dream for the good of the family.
68. ### History of health care

Please check my answer thanks :) You belong to an HMO your are helping to control plan costs for everyone True or False I said True
69. ### Health/ Basic Clinical Procedures

please check my answer thanks True or False Korotkoff sounds are related to the determination of blood pressure I picked True
70. ### Health/ Basic Clinical Procedures

please check my answer thanks true or false the carotid pulse is located on the anterior side of the neck I said true
71. ### medical records

please check my answer thanks you very much A medical should be completed within how many days after a pt is discharged A 30 B 35 C 60 D 15 E none of the above I picked D
72. ### spanish

please check: "¿A qué hora empieza el concierto de la orquesta?" " _____ el periódico, empieza a las ocho." a. después de b. según c. antes de d. es necesario B?
73. ### Literature

Please can you check my answer.. 13. According to Renaissance philosophy, commoners often represent A. reason. C. pride. B. love. D. appetite. I think it it... B. love. It that correct ?
74. ### English

1. How about goind economics camp? 2. How much did you spend? I bought a \$50 shirt and a \$5 socks. (Would you check the expressions? Please correct incorrect expressions?)
75. ### Math 115

Please check answer. The sale tax rate in a state is 7.5%. If you pay a tax of \$17.50 on an item that you purchase, what is its selling price? 17.50*7.5=\$131.25 is this correct?
76. ### MATH 7th GRADE

Would someone please be kind enough to check the answers for these problems?Last round for tonight. Thank you. 1. 3/16 - 1/8 = 1/16 2. 151/4 -11 5/8 = 3 5/8 3. 2 x 3/7 = 6/7 4. 1/2 x 7/8 = 7/16 5. 1 3/8 2 1/2 = 3/7/16 6. 1/2 divided by 2/3 = 3/4 7. 8 1/4 divided 1 3/8 = 333/32
77. ### algebra

could you please check my answer and show me correct way . thanks for your help solve the equation if pssible -3|6n-2| +5 = 8 note:: 6n-2 is abolute value 6n-2 is positive -3|6n-2| + 5 = 8 |6n-2| = 6 6n - 2 = 6 6n - 2 +2 = 6 + 2 divide by 6 n = 8/6 6n-2 negative -3|6n-2|+ 5...
78. ### chemistry/check please

923.85 grams of gaseous ammonia condenses into liquid.How much energy was released? answer: 1268.28852 = 1268 kj
79. ### Chemistry(Please check)

Classify the following functional groups: 1)CH3CH = CH2 I think this is an alkene 2) CH3CHCH3 I think it is an alcohol. ! OH Would you agree with my answers?
80. ### Can someone please check my answer for chemistry

Compelete the following table for an ideal gas. P= 7.74*10^3 Pa V= 10.3 mL N= ? T= 25°C I'm getting 3.20e-4, but my online homework says its wrong, what am I doing wrong?
81. ### algebra2 please check my answer thanks

find the vertical asymptotes of the following rational function(remember VA is X) x+6/(x^2+11x+30 ) my answer is x+6/(x+6)(x+5) cancel alike term i get 1/(x+5 )and V.A:x=-5 is that right thanks
82. ### algebra2 please check my answer thanks

find the vertical asymptotes of the following rational function(remember VA is X) y=x+6/(x^2+11x+30 ) my answer is x+6/(x+6)(x+5) cancel alike term i get 1/(x+5 )and V.A:x=-5 is that right thanks
83. ### SCHOOL

SHOOL IS NOT FUN!!!!!! ..... Jk.... April Fools!!!! Have a good day everyone and please don't use jiskha to cheat. Just use it to check your answers! :)
84. ### Math

What is the best estimate for the quotient. 5,397 division sign 62 a. 80 b. 90 c. 800 d. 900 My answer to the above is b Can you please double check my answer and let me know if I am right or wrong
85. ### Calculus Please Check my answer

Set up, but do not evaluate, the integral which gives the volume when the region bounded by the curves y = Ln(x), y = 1, and x = 1 is revolved around the line y = -1. ANSWER: v = ∫[1,e] π(4-(lnx+1)^2) dx
86. ### Calculus

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Enclosed by y = x and y = x^4
87. ### Math (Trig)

a ferris wheel has a radius of 10m and is one meter above the ground. If the ferris wheel makes 1 revolution every 20 seconds, write an equation that gives the height above the ground of a person on the ferris wheel as a function of time if that person starts (t=0) 1/8th of a ...
88. ### math

jon and jony can do a piece of work alone 12days and 24days respectively.they were working together but after a few days jon went away.then jony can do the rest work in 3days.how many days are needed to complete the whole work?
89. ### physics

A sphere of mass 78 kg is attached to one end of a rope as shown in the figure below. It is found that the rope does an amount of work W = 3550 J in pulling the sphere upward through a distance 4.6 m. Find the work done by the force of gravity on the sphere. My work W= -78 * 9...
90. ### math

Find the second derivative. y = sqrt(3x+4) I will be happy to critique your work. We don't do it for you. Thanks. Please post under one name. Thanks. who are u?
91. ### Calc Help

q=(1000/p+1)^2 - 1 find q' Please help. Question on review sheet. I will be glad to help you, or critique your work. What do you think the way to solve it is>
92. ### Physics

How long does it take a 19 kW steam engine to do 6.8x10^7 of work? I have no idea how to solve this... Would someone please help?
93. ### math

whats the integral of e^(3sqrt(x))? i think i'm supposed to use substitution but i don't know what to substirute, i tried u= x^(1/3) but it didn't work out, please help!
94. ### science

how do water powered mills work???? please help!!!!!!!! due tomorrow only in 5th grade make it not complicated
95. ### US History

Can you please tell me where can I find more info about Hannah Galler, a holocaust survivor: her life and work?
96. ### science

the making of polymers is an example of the category of work done by chemists calledd ________ fill in the answerr. please helpp!
97. ### Algebra

I also needed help with this problem to: 8 divided by 4 times 2 - 7 + 3 Again could you please show me the work involved in getting the answer. Thank you.
98. ### Chemistry

Calculate the volume of 0.6M HNO3 necessary to neutralize 28.55 cm3 of 0.45M KOH. please show work and detail.
99. ### chemisrty

Under what conditions of temperature and pressure do you think that the gas laws would work best? Please be specific
100. ### calculus

Given x+xy+2y^2=6 find the coordinates of all other points on this curve with slope equal to -1/3. Please show work.