Trig check my work please?

88,762 results, page 62

trig

i can not figure out how to write the complex number in rectangular form the question is 4(cos 5Pie/6 + i sin 5 pie/6)

trig

find all values of theta in the interval (0,360) that have the given value: sintheta= √2 ______ 2

trig

use a calculator to find the decimal approx. (roud 8decimal places) : sec28°6' does it equal 1.13362379 or 87.99624264 ???

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.

trig

write an equation expressing: cos37cos99 as a sum Review question. I know the formula. Having trouble with working it out.

Trig/advance math concepts

state the amplitude, period, and phase shift of the function -0.4 sin (10x+pie/2)

trig/math

If A is between 270degrees and 360degrees, and cos A=12/13, find the exact value of: sin2a, cos2a, sin1/2a, cos1/2a

trig

an isosceles triangle has a perimeter of 60in. the congruent sides measure (2x+9)cm. the length of the third side is 3xcm. what is the value of X?

trig

Find sin t,cos t and tan t when the terminal side of an angle of t radians passes through ( -3/5 , -4/5) on the unit circle.

trig

What would be the force required to push a 100-pound object along a ramp that is inclined 10 degrees with the horizontal?

Trig

simplify the expression to a single term: (1-2Sin^2 X)^2 + 4sin^2 X Cos^2 X I'm not sure how to start this or which identities to use. Any suggestions?

trig

I don't understand what to do after i convert everything into cos and sin. Verify: cosx(tanx+cotx)=cscx

Trig

This has to do with dot products (I can't make the arrow above the u, i, or j). Given u = 4i - 6j and v = -3i + 5j, find 4u-(1/2)v Am I just supposed to plug in what u and v are equal to in 4u-(1/2)v? If so, is the answer (35/2i - 53/2j)

trig

A hiker walks 900m east and 500m south .Find the bearing of the finishing position from the staring point?

Trig

Solve triangle ABC given the following conditions: 1. C = 135.77 deg, b = 10cm, a = 12cm 2. a = 11.5m, b = 10m, c = 16.94m

Math - Trig

Use the law of cosines to show that the measure of each angle of an equilateral triangle is 60deg. Explain your reasoning.

Trig / Calc

What angle (in degrees) corresponds to 18.96 rotations around the unit circle? Enter the exact decimal answer.

Trig 4

Can someone break down the meaning of sin, tan, and cos into simpler more understandable terms?

Trig

An isosceles triangle has legs 4 feet long. If the vertex angle measures 30 degrees, find the length of the base.

Trig

Find all solutions of the equation in the interval [0,2pi). 2sin theta+1=0. Write answer in radians in terms of pi.

Math -Trig

Determine the exact value if cot(3pi/4) using special triangles. I don't understand how it could be 1/tan3pi/4 in a triangle....

AP calculus BC

hello i know that deriv(cscx) = -cscxcotx and that deriv(cos) = -sinx deriv(cotx) = -((cscx)^2) my question is: is this (statements below) correct? antideriv(cscxcotx) = -(cscx) antideriv(sinx) = -cosx antideriv((cscx)^2)= -cotx were those antiderivatives above correct? ALSO ...

Chemistry

Can you please someone check my answer for me? I don't know how to start thses answer. Chemistry is not my things. Please give me answers. :( a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2. answer: 129.68grams 357.477722g/mol is ...

205

What type of introduction does the writer use? What is the impact of that kind of introduction in this essay? The work that we do and the attitude with which we approach and complete our assigned tasks have a significant impact on the way we define ourselves as individuals, ...

Math

Could someone please check my answers to this problem. Thanks! The license fee for a car varies directly with the value of the car. The fee for a car that is valued at $19,500 is $292.50. a)

English-(PLEASE CHECK)

Does Beneatha like the name Alaiyo? My Answer- yes Do you think it fits her? My Answer- yes Why or why not? My Answer- Yes, it fits her because necessary things are not enough for her; she always wants more.

True or False health insurance

please check my answer True or False CHAMPVA would be considered a primary payer for a patient who has SSI I think it is False

algebra

Could you please check my answer to this problem: Simplify the expression Original problem: (3x^2+10x-8)/(3x^2-17x+10) x (2x^2 + 9x -5)/(x^2 + 3x-4) The answer I got was: (3x +4)(x-2)/ (3x-2)(x-5) x (2x-1) ( x +5)/ (x +4) (x-1) so basically the problem could not be simplified ...

American Gov't--please check

Which third party is an example of an economic protest party? 1.)The Green Party 2.)The Populist Party 3.)The Independent Party My answer3.)The Free Soil Party

Science

check answer please. An object is pulled with 3 forces: 1 at 20n to the right another at 40n to the right and the third at 30n to the left. The net force is 30n to right

Spanish Beg. 1 - HW Check/HELP!

4. Que tiempo hace? English - What's the weather 5. Cual es la estacion English - ?????? 6. Cual el la fecha English - ????? Please help and is the first one if correct????

fact/opinion

Please check: 1) these mighty animals are close to extinction. [fact] 2) tigers are the biggest members of the cat family. [fact] 3) it is such a shame. [opinion]

Language Art (Please Check)

there _____ a ver long debate on the issue. Which of the following names the sentences subject and a verb that agrees with that subject? A.there;is B.there;was C.debate;was D.debate;were

Physics Help Please! Check the answer

an athlete stretches a spring an extra 40.0 cm. how much energy has he transferred to the spring, if the spring constant is 5286.0 N/m? Us= 1/2kx^2 =1/2(5286.0)(.40)=1057.2 J Thanks!

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 ...

calculus

find the solution of the differential equation dy/dt = ky, k a constant, that satisfies the given conditions: y(0)=50, y(5)=100 please show steps. INtegrate dy/dt I think the answer will be in the form of y=e^kt + C check that and see if it works. You should be memorizing your...

Teaching dogs Tricks

Please check my anwer thanks Funny sounds made by the owner combined with clicker training are a good way to train which of the following behaviors? A. Wave B. Pick up your toys C. Cock your head D. Go to a mark I pick C

Physics ideal gases

Would someone check my thinking please. PVT of an ideal gas (nitrogen) are all given. I've used PV=nRT rearranged to get the number of moles. Then, U= 3/2nRT to get the internal energy of the sample. Am I on the right track? Thanks.

chemistry

I got C_4 H_3 O_8 for this question but I'd like someone to check my answer, please. A 1.012 g sample of a compound containing C, H, and O was burned to produce 2.145 g CO2 and 0.3293 g H2O. Calculate the empirical formula of the compound

Social Studies

What was the purpose of the Freedmen's Bureau? A. to provide assistance to former slaves and poor whites B. to protect Georgia's landowners C. to create segregation laws for Georgia D. None of the above My best answer is A can you please check @Ms.Sue

Grammar PLease Check MY answers!

Is there a mistake with the superlative adverb? 1. Thomas sauntered casuallyier to the podium and waited. a. Change casuallyier to most casually . b. Change casuallyier to casualiest . c. Change casuallyier to more casuallyier . d. Make no change. 2.. Andre has the worst ...

trig/precalc

a car's flywheel has a timing mark on it's outer edge. the height of the timing mark on the rotating flywheel is given by y=3.55sin[x - (pi/4)]. graph one full cycle of this function. I was not taught how to graph a function like this, only the simple y= sin x and y= cos x ...

Calculus

For y=(1/4)x^4-(2/3)x^3+(1/2)x^2-3, find the exact intervals on which the function is a. increasing b. decreasing c. concave up d. concave down Then find any e. local extreme values f. inflection points --- I thought it'd be better to find extreme values first, then you can ...

Physics (Checking answe)

Sorry for re-posting but I need to know if I did it right, please help, I worked out the problem I just want to know if I did it right. A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 52(angle sign here) downward from the horizontal. Find ...

Physics

The work required to stretch a certain spring from an elongation of 4.11 cm to an elongation of 5.11 cm is 32.0 J. (a) Is the work required to increase the elongation of the spring from 5.11 cm to 6.11 cm greater than, less than, or equal to 32.0 J? (b) Verify your answer to ...

Physics (CHECK)

One student is pushing on a chair with a force of 260.6 N directed at an angle of 30 degrees above horizontal while a second student pushes on the same side of the chair with a force of 21.0 N at an angle of 15 degrees below horizontal. What is the magnitude, in N, of the sum ...

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 ...

Chemistry

Thanks for your help; I am still have a few problems, could you check my work: Given: Volume of vinegar analyzed-5mL Con'c of NaOH-0.09890M Avg. Volume of NaOH from titration-43.75mL Density CH3COOH: 1.049g/mL Calculations: 1.Moles of NaOH required to reach equivalence point= ...

Algebra (check answers)

Could you please check my answers we are using substitution to solve each system of equations. And at the end of every solution you are supposed to have an answer as a coordinate. 1. x=2y x+y=3 Answer (1,2) 2. 2y=3 x-y=10 Answer: (10,10) 3. y=x+7 x+2y= -21 Answer: (-3,-4) 4. ...

Calculus--> bobpursley

How do you get m=0? from taking the second derivative? does c=1? Can you check my work on how I get the derivative of R=M^2(c/2-m/3) NEXT R=1/2(CM^2)-1/3(M^3) NEXT dR/dM=CM-M^2. I checked in the back, and that was the answer for the first part of the equation. Isn't the ...

Brief 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. Between y = −x and y = −x^3 for x in [−1, 1]

Physics

At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational pull is 9.8m/s2, W(J)=F(N)*D(m) How do I work this problem??

Math

I need someone to please check my answer for me... add. -1.6 + (-2.3)= the answer I got was -3.9 is this correct? if not could you tell me why and how to get the correct answer..? thank you

@ Lucina -- SS

I deleted your 32 questions because there were no answers. Please post no more than 5 of these questions, along with your answers. We'll be glad to check your answers for you.

Repost- Calculus; someone please help

Please help out. Thank you. A right triangle has one leg on the x-axis. The vertex at the right end of that leg is at the point (3,0). The other vertex touches the graph os y=e^x. the entire triangle is to lie in the first quadrant. Find the maximum area of this triangle....

Math

Can someone check these inequality word problems to see if I did them right? Correct me if I'm wrong! Write a linear inequality using word problems. 1. A sculptor is selling his work at an exhibit to earn at least $25,600 in revenue. Small pieces go for $1600 and large pieces ...

Geometry

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it but it shows a ...

math(CHECK ANSWERS)

please check my answers. Mrs. Walters drove 160 miles on 5 gallons of gas. How many gallons of gas will she need to travel 256 miles? (ANSWER):160 divided by 5=32 256 divided by 32=8 Stephen read 90 pages in 6 days. If he continues reading at that rate, how long will it take ...

Meicare

Please check my answer thanks :) Hospitals that are excluded from the Medicare PPS (such as children's hospitals) are paid based on 1 reasonable cots 2. fee schedules 3. global payments 4. bundled payments I picked # 1

Chemistry

Please check to see if i did it right.. if the reduction potential for Cu^2+ + 2e---> Cu is 0.00V. Then the remaining reduction potentials for the voltages between Cu[cathode]/Zn[anode] is like??? Ecell=1.043v My answers:Zn-->Zn2+ 2e- voltage = -1.043V

Applied Dog Behavior

Please check my answer thanks 8. If the dog doesn't seem to like the sound of the clicker, you can A. hold it up in the air. B. give a better treat. C. click faster. D. put it in your pocket when you click. I picked D

Algebra check+help?

For problems 1 and 2 write Y as a function of X 1) 12=9x+3y - I think you would subtract 9 from the 12.. but I'm not really sure because you can't add/subtract x's and y's from regular numbers. 2) -2x+3y=9 Same problem as above.. Can someone please explain to me how to do ...

math

I know youall are very busy an that answering posts takes time, but I am in real need of some one to check my questions to see if they are correct, because I need to post my answers very SOON!! PLEASE HELP!!!! THANKS!!

Accounting Specialized Journals

Store owner makes a $80.00 purchase, goods for resale, and uses check $143. Using Specialized journals, general ledger and subsidiary account, what is the correct posting please.

Spanish 7th grade-please check

How doyou ask if a friend if they are hungry? Tienes hambre? If they are thirsty Tienes sed? Both should have upside down question marks before question

Pre-Calc-Please check

1.Write 4+6+8+10 in sigma notation: I came up with sigma in the middle 3 on top j=0 on the bottom 2. Find the 10th term of the sequence -1/5,-1/20,-1/80 this was a geometric sequence so I said a(subscript10) = -1/5*1/4^(10-1) =-1/5*(1/4)^9 = -1/5*1/2621444 = -1/1310702

4th grade limericks

can you please check this for me: there once was a cat named rainbow, so fat and colorful, she loved to catch mice to eat, on her big fat feet, and she's a cat who likes to tip-toe.

6th grade math

Can you check these, please? Convert each of the following verbal phrases to algebraic expressions. 1.twice the number plus 16 is 18 Ans: 2x + 16 = 18 2.the quotient of a number and ten more than fourteen is eleven Ans: (10 + 14)/x = 11? or x/10 + 14 = 11?

Check please !!

I think its True During the Stone Age, people invented tools such as daggers, spear points, and hand axes, and made them mostly out of stone. A. True B. False

Math

1. Given the function rule f(x)= x^2 - 3x + 2, what is the output of f(-2)? A. 12 B. 4 C. -8 D. 0 2. Suppose you earn $10 each hour you babysit. Which function describes the relationship between your total earnings E and the number of hours you babysit, h? A. E(h) = 10h B. E(h...

science

I had objects that I had to find the source energy then what it was converted to. Please check my answers: battery Powered Drill chemical--> mechanical and thermal Lava Lamp Electrical--> thermal and nuclear

Math

I don't know if my answer for this question is correct but can you please check? 1.) Between which pair of numbers does the square root of 15 lie? Do without using a calculator. A.) 3.7 and 3.8 B.) 3.8 and 3.9 C.) 3.9 and 4.0 D.) 14 and 16 I think the answer to this might be A...

physic

how is the time for which work a machine and it does a work? t=? A=9.3*10^4J P=1.3*10^4W

math/algebra

Subtract: express your answer in simplest form. 2/5 - y/y-2 answers a)-3y-2/y-2 b) -3y -2/5(4-2) c) -3y-4/5(y-2) d) -3y-4/y-2 The way you have written the problem, is 2/5 minus y^3. I don't think that is what you meant. Please use grouping symbols on fractions () or [] The way...

Science :check my answers

Here are some questions I had for hw, I answered some of them, can someone check my answers and help me with the ones i didn't answer, thanks: 1.Which constellations are visible from Canada in all seasons? My Answer:Ursa Major, Ursa Minor, Lynx,Cephus, Cassiopia, ...

Science

What would the application be to my experiment which was "We dig through soil and check for inorganic and organic matter in the soil and look for natural things in the soil(ex; beans,feather,rocks,sticks,and grass)" Please I need your help URGENT! ! !

physics

Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ...

physics

A 2 kg block is pushed 2 m along a fixed horizontal surface by a horizontal force of 20 N. The coefficient of kinetic friction of the surface is µk= 0.40. (a) How much work is done by the 20 N force? (b) what is the work done by the friction force? (c) What is the total work ...

Ms.Sue or Steve can u please help me?!?!!?

Ok these are some textbook questions i need to turn in soon could you please check and see if they are correct~ 1. x over 4 + 1 = –5 (1 point) –2 16 4 –24 2. 6x + 29 = 5 (1 point) –4 –18 204 –144 3. Combine like terms: –21a + 16a (1 point) –5a 5a 37a –37a ...

Complex Algaebra, Plz Help!!

Good evening to all around the world. Need help with this question, however i must show my answers supported by the working out. Please help. This question is difficult, the one who solves it for me is my hero!!!! Q11) Two functions f and g are defined by F:x (arrow) 25/(3x-2...

algebra I

please check my answer 2/3x-24 less than/equal to 8 = x less than/equal to 12

Help!

MS. Sue, to the other civics questions can u please check my other questions????

physics please HELP !

can you please help me with this please. thank you. A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle delta and the ...

English please help me

Please help me to correct my English grammar. thank you. June 17, 2014 Dear sir, Good day, I regret when I resigned from your company but it’s my family’s reason. I am now presently working here in Maldives as a professional photographer and salesman as well. I realized ...

Apchemistry

Thank you for your help Why is solid copper (I) nitrate a poor conductor? I know that CuNO3 is an ionic solid, so maybe (please check me on this) the electrons in CuNO3 are exchanged in the formation of electrostatic attractions found within ionic solids, so the electrons ...

dog behavior

please check my answer thanks True or False Modeling is a training technique that involves providing one dog as an example for another dog to follow I think that is True

Physics -- check answers please

1. If 31 waves pass by a point in 1.7 s, what's the frequency? my answer: 18.2 Hz 2. if a crest with an amplitude of 7cm interferes with a trough with an amplitude of 10 cm, the resulting wave has an amplitude of: my answer: -3

PLEASE CHECK OPERATIONS WITH FRACTIONS PART 2

10.5/7-4/6 A.1/21*** B.1 C.1/42 D.1/14 11.-3 7/9 - 1 2/9 A.-2 5/9*** B.2 5/9 C.-5 D.4 5/9 12. 6 1/3 - 4 4/9 A.2 1/3 *** B.2 2/3 C.1 8/9 D.1 2/3 13. Kevin had 3/4 yard of string. He used 1/3 of the string for a school project. How many yards of string did he use for his project...

Trig

I have a diagram of how far a discus was thrown. From A to B is 100m, C is perpendicular to A, from A to C is 50m, A and B are connected to D (it should be a triangle), A has a 40° angle and B has a 75° angle. C is not perpendicular to D btw.. a. Find AD and use it to find ...

pre-calc

Can someone check my work please? Convert each polar equation to a rectangular equation. Then determine the graph's slope and y-intercept. ( I'm going to type 'x' instead of theta ) r sin(x- pi/4)=2 r(sin(x- pi/4))=2 r(sinx*cos pi/4 - sin pi/4*cosx)=2 r(sqrt2/2*sin x - sqrt2/2...

math

24 men can do a work in x days and 32 women can do the same work in (x+8)days.the ratio of work done by 15 men and 12 women in the same time is 3:1,find value of x? ( ans 10) ?

Physics

A rope is tied to a box and used to pull the box 1.7 m along a horizontal floor. The rope makes an angle of 30∘ with the horizontal and has a tension of 5 N. The opposing friction force between the box and the floor is 1 N. Part A How much work does gravity do on the box? ...

Trigo!

Ok, i've tried this sum a million times and i cant get an answer. Somebody please check my workings and tell me what i did wrong! Thanks! Given 4≤y≤6, find the value of y for which 2cos((2y)/3) + √3 = 0 Here's my workings: 2.666≤(2y/3)≤4 2cos(2y/3...

Economics- please check

Please check to see if my answers are correct. Complete each sentence by choosing the correct answer from the list of terms below. You will not use all of the terms. *normal good *complements *income effect *demand curve *ineleastic *inferior good *law of demand *unitary ...

Rational Exponents - Please Help!!!!

I will appreciate it if anyone can help me with the following: 1. The optimal height h of the letters of a message printed on pavement is given by the formula . Here, h= (0.00252d^(9/4))/e d is the distance of the driver from the letters and e is the height of the driver’s ...

Math

Could someone please check my work on these word problems? My solutions just don't seem right, could you please let me know where I may have messed up. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on ...

Spanish Check

Hello! Could someone please check these for me? Thanks a bunch! :) Directions: Rewrite the following English sentences in correct Spanish form. The verb you will just is limpiar. 1.) I will have cleaned the house. 2.) Jessica and Sara are sad that I didn’t clean the house. 3...

English

Can you please check these sentences on phrasal verbs, please? Thank you very much in advance. (I don't know if their use is correct). 1) The plane will lift off at 9.00 o'clock. 2) They will head off at six a.m. tomorrow. 3) He cleared off without saying goodbye. 4) He ...

English

Could you please check these two sentences, please? 1) Dorian wishes he would stay young forever whereas the portrait would grow old in his place. 2) According to Wordsworth, man and nature are (were) two different but inseparable parts of the same universe, a total scheme ...

LAL! check my work

check if my sentences is correct part.= participle phrase ger.= gerund phrase inf.= infinitive phrase or none and the phrases are capitalized . are they correct 1. the news showed pictures of houses destroyed by the hurricane. NONE 2. would you ever want TO GO ON A 2-WEEK TRIP...

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