# Trig check my work please?

42,204 results, page 61

1. ### trig

Please help me! SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Verify that each equation is an identity. (sec α + tan α)^2 = 1 + sin α/1 - sin α
2. ### Trig/Physics

A car's wheel (with tire) is 26 inches in diameter and its center is 12 inches above the road. If the car is traveling at 60 feet per second, how fast is the highest point of the tire moving relative to the ground?
3. ### trig

an airplane has an airspeed of 430 miles per hour at a bearing of 135 degrees. the wind velocity is 35 miles per hour in the direction N30degreesE. Find the resultant speed and direction of the plane.
4. ### ?Cal/Trig??

Suppose the circumference of a circle is increasing at a rate of 3 cm/s. Find the rate at which the area of the circle is changing when the area is 64pi square centimeters. nEEd ALot of HELP on this one. !! PLZ. Jayden--CUHS
5. ### math (trig)

Prove: sin^2(x/2) = csc^2x - cot^2x / 2csc^2(x) + 2csc(x)cot(x) On the right, factor the numberator as a difference of two perfect squares. In the denominator, factor out 2cscx. You ought to prodeed rather quickly to the proof.
6. ### early trig

A monument stands on level ground. The angle of elevation of the top of the monument, taken at a point 425 feet from the foot of the monument, is 32º. Find the height of the monument to the nearest foot.
7. ### Trig.

An airplane flying at 600 miles per hour has a bearing of 52 degrees. After flying for 1.5 hours, how far north and how far east will the plane have traveled from point of departure? (I'm not sure how to convert miles into degrees or if that's even the right thing to do)
8. ### MATH

6. It takes Pam 45 minutes to drive to work and 60 minutes to drive home from work. Write the ratio of the time Pam spends driving home from work to the time she spends driving to work in three different ways. 7. Ben needs to buy orange juice. He can buy 64 fl oz. at the ...
9. ### English (Please Check My Work)

(Can someone please check my work.) 1. Read the following passage found in From Emperor to Citizen. From my infancy I was accustomed to having people kowtow to me, particularly people over ten times my own age. They included old officials of the Ching Dynasty and the elders of...
10. ### Math

Can you please check my work since my professor wont. Thanks 50% of 45 solution=90 Predict the height of a woman who's humerus is 40 cm long using H(x)=2.75x+71.48 solution= 181.48cm Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at...
11. ### Language Arts Help me!!

Think about the work you completed in your reading character role. Determine the ideas that would be most worthy to share in a literary discussion about Johnny Tremain. Provide an explanation for your choices. How did the role you selected and the work you completed help you ...
12. ### Art

Hello. I'm suppose to examine the "winged genie fertilizing a date tree" and explain the elements of art found in the work, one particular element that helped with the overall success of the artwork, and explain what type of movement is shown in the work. The problem is that I...
13. ### science

Mr beck gigantic gas guzzling exhaust spewing urban assault vehicle suburban weighs 10000ponds it takes mr becck 2 minutes to drive 1.5 kilometers to west valley fitness so he can ride the stationary exercise bike for a half hour How much work and power did the suburban do? A...

A smokestack is 200 ft high. A guy wire must be fastened to the stack 30.0 ft from the top. The guy wire makes an angle of 42.0° with the ground. Find the length of the guy wire.
15. ### Conceptual Physics

While driving down an icy road in his pickup truck, Dan slid off the road into a ditch. He and his two friends each exerted a force of 200 N on the truck for two minutes, but failed to move it. The work done by the three friends on the truck was? the answer is 3.0m/s but isn't...
16. ### math

John drives to work each morning and the trip takes an average of µ = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of σ = 5 minutes. For a randomly selected morning, what is the probability that John’s drive to work ...
17. ### physics thermodynamics

A gas expands from a volume of 2.00m^3 to 6.00m^3 and does 6912 joules of work against a constant outside pressure. Calculate this outside pressure in Pa. The answer is 1730 Pa, but I don't know how to get that. I honestly have no idea where to start or what formulas to use. ...
18. ### physics

A 50-kg box is being pushed a distance of 7.1 m across the floor by a force whose magnitude is 175 N. The force is parallel to the displacement of the box. The coefficient of kinetic friction is 0.19. Determine the work done on the box by each of the four forces that act on ...
19. ### psychology

In class we were asked to provide an one example of classical and operant conditioning. We have to identify the stimulus, response and reinforcers in each example. here are my examples: Clasical Conditioning- My cat comes running everytime she hears the can opener. Operant ...
20. ### Geometry

1) Explain how you can use a straightedge and a compass to construct an angle that is both congruent and adjacent to a given angle. 2) When constructing a perpendicular bisector, why must the compass opening be greater than the 1/2 the length of the segment? 3) When ...
21. ### inforrmation tech/marketing

hi i just made this paper about information technology on business and marketing, im not really good at it so please check my work and maybe revise alittle thanks so much :) need it later hehe :D thanks As industry and commerce have increased their use of modern technology ...
22. ### math

is 765/2023 simplified?!!? I think it is. Nope, it isn't, 765 = 32*5*17 check the divisor of 765 into 2023 what do you mean What do you mean?Your making it more difficult for her! What am I making difficult here? All we need to do is find the factorization of one of the ...

Please check my answer thanks :) Find the equation of 9 (2x-18)=36 9(2x)-9 (18) =36 18-162 =36 18-162 =36 18x162 =36 +162 +162 ------------------------- 18x =198 18x 198 ----------- 18 =18 x =11

Please check my answer thanks :) Find the equation of 9 (2x-18)=36 9(2x)-9 (18) =36 18-162 =36 18-162 =36 18x162 =36 +162 +162 ------------------------- 18x =198 18x 198 ----------- 18 =18 x =11
25. ### algebra

Junior ate 30% of the sandwiches at the picnic. If he ate 1 ½ sandwiches, how many sandwiches were there? you cant solve this right? We can't?? Sez who? Let x denote the number of sandwiches. Then we're told 30%x=.30x=1.5 sandwiches. So x=1.5/.30=?? something you can do. its...
26. ### science(check asnwer) !!

please check my answer shoe companies imbed unique designs on the bottoms of the sneakers they manufacture.what is the main purpose of the designs on the bottoms of sneakers? A.to increase potential energy B. to decrease friction C. To increase friction(I PICK THIS) D. To ...
27. ### Art History

I have to answer some questions about the artwork "Last supper" from the Rossano Gosepl but i need help cause i am really confused. 1) What message or meaning do you think this artwork conveys? 2) why is this artist an important one to know historically 3) what is the artists ...
28. ### physics

How much work does the electric field do in moving a proton from a point with a potential of +120 V to a point where it is -60 V? Express your answer in joules. I've looked through my notes, and I'm sure the answer is really easy, but I'm not seeing it. I know that Work(Wba)= ...
29. ### computers (Check)

Will someone please check my C++ for me? 1. What does the Load ( ) method do? Gets data from a file and puts it into a DataSet object. <----- Gives a value to an attribute of an XmlElement object. Deletes all the data in a DataSet object. Tells a form to appear. 2. Scenario...
30. ### Trig

A curve with polar equation r=(8)/7sinx + 36cosx represents a line. This line has a Cartesian equation of the form y=mx+b ,where m and b are constants. Give the formula for y in terms of x . For example, if the line had equation y=2x+3 then the answer would be 2x+3 .
31. ### English

Could you please check these sentences? I urgently need them. 1) Decadent writers (the Aesthetes is possible?) fostered (??) the ideal of the Wildean dandy, a member of aristocracy who demanded absolute freedom and despised the Victorian values of work and morals. 2) His ...
32. ### Algebra

Use the five steps for problem solving. Enrollment at a particular online university is 11,600. There are seven times as many students who work full time as there are students who do not. How many students work full time and how many do not?
33. ### Algebra

Use the five steps for solving problems Enrollment at a particular online university is 11,600. There are seven times as many students who work full time as there are students who do not. How many students work full time and how many do not?
34. ### Math- Reiny can you help me with this question

I know how to do the work, but the way the question is worded I am not sure the answer. The math works comes out to -2 which is b but if you want the number less than -2 the answer is c. Which are they asking for . This is my work. Which is the value is in the solution set for...
35. ### Chemistry

can anyone check and see if i balanced the equation for the combustion of benzene correctly, thank you. C6H6 + O2 --> CO2 + H2O Answer: C6H6 + 15O2 --> 6CO2 + 3H2O It doesn't look right to me; however, you can check ALL balanced(?) equations and know when you are right ...
36. ### physics

Two forces, of magnitudes F1= 80.0N and F2= 50.0N, act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure. Initially, the center of the block is at position x1= -3.00cm. At some later time, the block has moved to the right, and ...

Travis earned \$214 for each week of work. At the end of the year, Travis’s total income was \$10,700. How many weeks out of the year, did Travis work? Write an equation to show your answer. Variables and Functions Solve problems 1–6. x 1 2 3 4 y 5 10 Number of hours worked ...

Hello. I am having some difficulty with this problem. Could you please check my answer? You start searching for a buried object by marking the center of a field as (0, 0), with coordinates giving distances in yards. Coordinates to the north or east are positive, and ...
39. ### algebra

5x-2y=-5 y-5x=3 substitution Substitute 5x +3 for y in the first equation, then solve it for x. Substitute 5x +3 for y in the first equation, then solve it for x. When I subsitute 5x+3 into the equation I get x=1/5 and y=2 is this correct? You are close! Try x = -1/5 (y is ...
40. ### physics

A skier of mass 70kg is pulled up a slope by a motor-driven cable. The acceleration of gravity is 9.8m/s^2. How much work is required to pull him 60m up a 30.7º slope (frictionless) at a constant speed of 3 m/s? answer in units of kJ. In this question, I think I gotta use mgh...

please check my answer thanks Equation 9(2x-18) = 36 18 -162 = 36 18 x 162 =36 + 162 + 162 18 x = 198 18x 198 18 =18
42. ### Algebra (check my answers)

Please check these answers. Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x - 12y - 5 Evaluate the expression 3x2y when x = 3 and y = 5 Answer: 135 ...
43. ### physics

a +35x10^-6 C point charge is placed 32 cm from an identical +32x10^-6 C charge. how much work would be required to move a +50.0x10^-6 C test charge from a point midway between them to a point 12 cm closer to either of the charges? please show work and explain. i still don't ...
44. ### Math

Jean deposited a check for \$625, wrote two for \$68.74 and \$29.95 and used her debit card to pay for a purchase of \$57.65. How has her account balance changed? I am a little lost, I understand the deposit BUT from what I understand she wrote 2 check in the amount of \$68.74 each...
45. ### Basic Math (Check my answer)

Which of the following is equal to 1/6 ÷ 1/18? Assume the shapes are rectangular. Describe another situation that this quotient models. A) The area of a planter that is 1/6 yard wide and 1/18 yard long. B)The width of a 1/18-square-meter flower bed that is 1/6 meter long. C)...
46. ### Trig(I think)

Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 1m/s, how fast is the area of the spill increasing when the radius is 30m?
47. ### trig

From the top of a hill 700 ft. high, an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two markerstones.
48. ### trig plz help

A boat sails 20 km in a direction of N75°E. Draw the 20 km travelled in a direction of N75°E as a vector v in standard position. Find the component form of the vector v. Round your answers to the nearest hundredth.
49. ### Trig

A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of due east. What is the actual speed and heading of the plane? Round to one decimal place.
50. ### Trig/PreCalc

An airplane is flying on a compass heading of 160 degrees at 425 mph. A wind is blowing with the bearing 200 degrees at 75 mph. Find the actual speed and direction of the airplane.
51. ### trig

a hot air balloon climbs continuously along a 30° angle to a height of 5,000 feet. To the nearest tenth of a foot, how far has the balloon traveled to reach 5,000 feet? Draw a sketch and then solve.
52. ### trig

use the function G(x)=x^3-8x +1 b) identify and verify the y intercept of G c) estimate the zeros of G to the nearest tenth d) estimate the coordinates of the relative extrema of G to the nearest hundredth e)in what intervals is G positive? Negative? f) in what intervals is G ...
53. ### Trig

The path of a projectile fired at an inclination t0 to the horizontal with initial velocity v feet per second is a parabola. The horizontal distance R, in feet, that the projectile travels is given by R = v2sin(2t)/32.2. What is R if v = 152 and t = 74? Give your answer to the...
54. ### check my work

10. Knowing that you use 245 KWH 7am – 7pm and 165 KWH 7pm – 7am, answer the follow questions using the chart below. Constant Usage \$0.05324/ KWH Daytimer (Most usage between 7am­7pm) · As long as most power used is 7am – 7pm, then you receive a 20% discount on power ...
55. ### English

Thank you very much for your corrections. Here are a few more sentences on the same subject I'd like you to check. 1)The Industrial Revolution brought several changes to Britain. First of all, it caused an enormous increase in production and consequently in the total wealth of...
56. ### Trig

How do I write cos(11x)cos(x)+sin(11x)sin(x) as a single trigonometric function? Please show steps.
57. ### trig

Solve for [0, 360) 2sinxcosx + cosx =0 2sinxcosx = -cosx 2sinx = -cosx/cosx sinx = -1/2 {210, 330) Is this correct?
58. ### trig

Convert the rectangular coordinates to polar coordinates, using radian measure for the angle. (6, -6) 6√(2),7π/4 OR -6√(2),5π/4
59. ### trig

Suppose sin theda= – 3/5 and theda is a Quadrant III angle. Find the exact value of sin 2 theda and cos 2 theda.
60. ### trig

in an algebra class of 21 students the mean grade on a test was 87; in another class with 32 students the mean grade was 81. What is the combined mean of the two classed? my teacher said it's 21 * 87 + 32 * 81/53= 83.4 but i'm not sure where the 53 came from.. thanks in advance
61. ### trig

A lighthouse is 14 miles east of a dock. A ship sails N33degreesE from the dock. What will be its bearing from the lighthouse after having sailed 10 miles?
62. ### trig.

in an algebra class of 21 students the mean grade on a test was 87; in another class with 32 students the mean grade was 81. What is the combined mean of the two classed? my teacher said it's 21 * 87 + 32 * 81/53= 83.4 but i'm not sure where the 53 came from.. thanks in advance
63. ### trig

If a ship leaves port at 9:00 a.m. and sails due south for 3 hours at 14 knots, then turns N 60° E for another 2 hours, how far from port is the ship?
64. ### Trig

Sarah used her calculator to find sin125 degrees . She wrote down sin125 degrees = -.57. How could Sarah recognize that her answer is incorrect?
65. ### Trig

Why is the arctan of - square root of 3 equal a negative value (-pi/3) While the Arccos of -1/2 equal a positive value (2 pi/3)? Since it's the same concept, I'm not sure why the one value is negative while the other is positive. Thanks for your explanation!!
66. ### trig

A 10m flagpole casts an 8m shadow at the same time of day as a building casts a 60m shadow. How tall is the building?
67. ### Pre-Calc/Trig...

Stuck on these two questions, help me please. The graph of y=3x^2-4x+2 opens downwards. True or False? The graph of y=2x^2-4x+2 has a y-intercept of (0,1). True or False?
68. ### trigonometry

1) Perform the operation and leave the result in trig. form. [3/4(cos pi/3 + i sin pi/3)][4(cos 3pi/4 + i sin 3pi/4)] Thanks
69. ### Trig

A vertical pole stands on a 20° slope from 50 m down the slope from the pole the angle of elevation of the top of the pole is 35 degrees. How tall is the pole
70. ### trig

When the sun's angle of elevation is 30 degree the shadow of a post is 6 ft longer than when the angle is 45 degree. find the height of the post
71. ### Pre-calc/Trig

If cot(a)=3 and sin(b)= (15/17) where a being alpha lies in quadrant 3 and b being beta lies in quadrant 2, what is the exact value of sin(2a)
72. ### Algebra 1

A part time job pays \$465.55 a week and a fixed hourly rate for any extra hours of work. For 2 weeks Emily works 4 extra hours per week and earns a total of \$1211.10. What is the amount paid for each hour of extra work?
73. ### Physics

A man uses a pulley arrangement to lift a heavy crate.He applies a force that is one-fourth the weight of the crate, but moves the rope a distance four times the height that the create is lifted. Is the work done by the man greater than, equal to, or less than the work done by...
74. ### Physics

A roller coaster (491 kg) moves from A (1.09 m above the ground) to B (26.3 m above the ground). Two non-conservative forces are present: friction does -2.39 x 104 J of work on the car, and a chain mechanism does +5.18 x 104 J of work to help the car up a long climb. What is ...
75. ### Pre-algebra

I don't understand this. Can you do some examples? One student had the following way of dividing fractions. First the student renamed the two fractions with a common denominator. Then the student ignored the denominators and just divided the numerators to obtain the answer. ...
76. ### Algebra

Tim works part-time at a retail store. His salary varies directly by the number of hours worked. Last week he earned \$99.45 for 13 hours of work. This week he earned \$160.65. a. Write and solve an equation that represents this scenario. b. How many hours did he work?
77. ### Statistics

John drives to work each morning and the trip takes an average of μ = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of σ = 5 minutes. For a randomly selected morning, what is the probability that John’s drive to ...
78. ### Physics

A 1260-kg car starts from rest at the bottom of a drive way and has a speed of 3.00 m/s at a point where the drive way has risen a vertical height of 0.600 m. Friction and the drive force produced by the engine are the only two nonconservative forces present. Friction does -...
79. ### statistics

John drives to work each morning and the trip takes an average of  = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of  = 5 minutes. For a randomly selected morning, what is the probability that John's drive to ...
80. ### soc 120

This is a reason an employer might restrict employee Internet access: (Points : 1) Employees waste too much time on the Internet. Viewing certain kinds of sites could lead to a hostile work environment. An employer can guarantee Internet access is work-related. All of these ...
81. ### Physics

The kinetic energy K of an object of mass m moving at a speed v is defined as K=(1/2)mv^2. It seems reasonable to say that the speed of an object--and, therefore, its kinetic energy--can be changed by performing work on the object. In this problem, we will explore the ...
82. ### Physics/Math

A machine carries a 5.0 kg package from an initial position of di = (0.50 m) i + (0.75 m) j + (0.20 m) k at t = 0 to a final position of df = (8.00 m) i + (11.0 m) j + (7.40 m) k at t = 13 s. The constant force applied by the machine on the package is F = (2.00 N) i + (4.00 N...
83. ### algebra

1)the gateway arch, which can be closely approximated by a parabola, is 630 feet high and 630 feet across at the base. The Gateway arch is the tallest man-made monument found in the United States in St. Louis Missouri. The maintenance crew is doing some work on the arch. The ...
84. ### algebra

1) The maintenance crew is doing some work on the arch. The work will be done on the right side of the arch. In order to bring the equipment up the maintenance crew has constructed a temporary ramp from the ground on left side of the arch to the level where the work will be ...
85. ### Physics questions ( I posted all my work)

A uniform rod AB is 1.2 m long and weighs 16N. It is suspended by strings AC and BD. A block P weighing 96N is attached at E, 0.30N from A. The tension force in the string BD has a magnitude. My work: Taking torque around AC string clockwise=counterclockwise block P + Board ...
86. ### math

the stem-and-leaf plot shows the height, in inches, of the players on two different basketball teams. How many players on each team are less than 70 inches tall? Heights of Players In inches Austin College Barton College Leaf Stem Leaf 6 7 8 8 9 6 4 6 8 1 1 2 6 7 1 1 1 3 4 5 1...
87. ### PHYSICS

Identify the following gas compression descriptions as adiabatic, isothermal or isobaric. a. As the gas compresses, the internal energy ÄU, decreases when the temperature decreases; the work done on the gas is greater than the heat removed from the gas: ___________________ b...
88. ### chem. check

Can u please check these questions..thanks! Redox Stoichiometry 1.A 2.45g zinc metal strip is placed into an 2.3 x 10-1 mol/L solution of tin (II) bromide. If all the zinc and tin (II) bromide react, what was the volume of the solution. My answer: 8.62L is the volume of the ...
89. ### physics

A helicopter lifts a 70 kg astronaut 13 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. (a) How much work is done on the astronaut by the force from the helicopter? J (b) How much work is done on the astronaut by her weight? J (c)...
90. ### history/times zones

please check these 1. (a) If it is 12:00 noon, Greenwich time, what time is it in Moscow? 3:00 pm In Denver? 5:00 am 2. (a) If it is 1:00 am in the time zone where you live (atlanta, georgia), what time is it in karachi, pakistan? 11 pm In Guangzhou, China? 4 pm 2 (b) If it is...
91. ### Government US

The primary reason that the existence of Social Security greatly lessens the demand for other forms of social welfare is that a. Social Security is so popular that many people believe other welfare programs are neither necessary nor desirable. WRONG b. the anticipation of ...
92. ### check my work

5.  What kind of primary does the following scenario describe? A candidate competes in a state’s presidential primary and wins 26 percent of the popular vote. Twenty­six percent of the state’s delegates are officially pledged to vote ...
93. ### physics

A particle moves in a circle in such a way that the x- and y-coordinates of its motion are given in meters as functions of time t in seconds by: x=5cos(3t) y=5sin(3t) What is the period of revolution of the particle? Here's what my train of thought was... dy/dt over dx/dt ...
94. ### trig

I am having trouble figuring these two out The directions say find all solutions to the triangles described below. Round each angle to the nearest degree and the length of the missing side to the nearest tenth at the end of the computations C= 27 degrees 50 minutes, c= 349 m, ...
95. ### Trig

The Stratosphere Tower is Las Vega dominate the city's landscape by rising 1,149 feet above the desert floor. The restaurant at the top of the tower turns slowly and completes a full revolution in one hour. How many radians will the restaurant have rotated in 52 minutes?
96. ### physical

Problem 1 A goalkeeper kicks a ball of mass 400 g in the air, and reaches a position of height 15.9 m above the ground corresponding to a horizontal distance 19.7 m from its initial position. During its flight, the ball experiences a horizontal friction force of 3 N from a ...
97. ### physical

Problem 1 A goalkeeper kicks a ball of mass 400 g in the air, and reaches a position of height 15.9 m above the ground corresponding to a horizontal distance 19.7 m from its initial position. During its flight, the ball experiences a horizontal friction force of 3 N from a ...