Trig check my work please?

88,665 results, page 80

trig

Given angle x, where 0 <= x < 360 (degrees), cos(x) is equal to a unique value. Determine the value of to the nearest degree. Justify your answer.

trig

Given angle x, where 0 <= x < 360 (degrees), cos(x) is equal to a unique value. Determine the value of to the nearest degree. Justify your answer.

trig

Given angle x, where 0 <= x < 360 (degrees), cos(x) is equal to a unique value. Determine the value of to the nearest degree. Justify your answer.

Trig. Math

A circle of radius 2 inscribed in a right triangle. Find the simplest expression possible for the triangle's area as a function of its hypotenuse.

Trig

Use the given information to evaluate sin (a-b). Exact answers. No decimals. Sin a = -7/25, cot b = 8/15; neither a nor b are in quadrant III.

Trig

Use the given information to evaluate sin (a-b). Exact answers. No decimals. Sin a = -7/25, cot b = 8/15; neither a nor b are in quadrant III.

math

Use Green's Theorem to evaluate F(x, y) = y cos x − xy sin x, xy + x cos x , C is the triangle from (0, 0) to (0, 4) to (2, 0) to (0, 0) I kind of understand how to do this , but I am having trouble with the trig

trig

I need help setting this problem up. A force of 36lb is required to hold a 70lb toolbox on an incline. What angle does the incline make with the horizontal?

trig

1. The sides of a triangle, in centimetres, are given by 3n-4, 3n+9, 4n+5. Draw a diagram to show the information. If the perimeter of the triangle is 114 cm, find the length of each side.

algebra 2 and trig

The scores on a chemistry test are normally distributed. Approximately 95 percent of the scores fell between 78 and 92. What is the standard deviation for this distribution?

Trig

Find the exact value of csc 4pi/3 What I have determined thus far: 4pi/3 = 60 degrees sin = square root of 3/2

Trig

a road is inclined at an angle of 45degrees. After driving 300 feet along this road, find the driver's increase in altitude.

Precalculus

Rewrite as single trig function: sin(8x)cosx-cos(8x)sinx I know I can simplify sin(8x) into 4sin2xcos2xcos4x, but I'm stuck after that

Intro to Trig

Which of the following best corresponds to the x-value where the function f(x)=cos x is a minimum in the interval x = [25,30]? A) 25.1 B)26.7 C)28.3 D)29.8 Can someone show me how to solve this step by step? Thanks :)

Trig help

Find the cos(Θ) of an angle in standard position if the terminal side passes through the point (4, -8). -2 -2/sqrt5 1/sqrt5 2 I think it is C but I am not so sure.

Trig

Find the derivative. {sqrt(x+8)}*(x^2+20x) (x+8)^1/2(2x+20) minus (1/2)(x+8)^-1/2(x^2+20x) I'm not feeling confident I am on the right track and I have a quiz tomorrow over this.

trig

If a triangle has an area of 50 square units and has angles that measure 15, 65, and 100 degress, find the length of the shortest side to the nearest tenth. Do not round till the final answer.

trig

If a triangle has an area of 50 square units and has angles that measure 15, 65, and 100 degress, find the length of the shortest side to the nearest tenth. Do not round till the final answer.

trig

What is the shortest possible length of a triangle side facing an angle of 20 degrees, if one of the other sides is 5? (answer should be a decimal number, correct within 0.001)

maths

in right angled triangle ABC, angleBis90 degree and C is an acute angle of60degree. Also sin m<C=c/b. Find the following trig ratios.(a)mBC/mAB (b)cosec30degree

TRIG

Verify the following identity. 1) sin(x+y) __________ = tanx+tany cosxcosy 2) Write cos3x in terms of cosx I cannot figure out how to solve for identities they are so hard. Any help appreciated!:)

trig

Simplify and write the trigonometric expression in terms of sine and cosine: cot(-x)cos(-x)+sin(-x)=-1/f(x)=f(x)=____________ I've tried everything, I think that the "-1/f(x)" part is screwing up my answer but I'm not sure what it's asking me to do with that?

Trig

Find sin(s+t) and (s-t) if cos(s)= 1/5 and sin(t) = 3/5 and s and t are in quadrant 1. =Sin(s)cos(t) + Cos(s)Sin(t) =Sin(1/5)Cos(3/5) + Cos(-1/5)Sin(3/5) = 0.389418 Sin(s-t) =sin(s)cos(t) - cos(s)sin(t) =sin(-3/5)cos(1/5) - cos(1/5)sin(3/5) =Sin-3/5 cos-3/5 = -0.46602 HELP ...

Chemistry: please help, I am stumped

When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation for the reaction. b. ...

Science

For my science class I have to make a machine that attempts to convert heat energy into work. I'm not really sure how to do this, but I do have some ideas, however I'm not all the way there. If you told me your opinion of my ideas or if you gave me one of your ideas that would...

Write each expression using a single exponent.

Write each expression using a single exponent. 34.) 5^10/5^7 36.) 76^11/76^5 Please, Please, show work.

dwrls,math

PLEASE LOOK IN THE BOTTOM OF THIS MESSAGE...... solve for x: 3x - 2y = 6 i need help in solving this: the possible answers has to be one of these: A)2y +6 divided by 3 b)3x -6 divided by 2 C) 2 + 2y D) 2/3y + 6 but how i keep trying and i don't get non of these. For Further ...

Math Analysis

Can someone check my answers please? Thank you! If tan x = 3/5, evaluate: 1) tan 2x 2) tan 3x ==> For #1, I got 15/8; for #2, I got -99/5. Are these answers correct?

powers of exponents math

simplify each expression: can you check and help me please a) 3*3*3 i got: 27 b) (-2)(-2) i got: 4 c) (-125)(-125)(-125) i got: -1953125. d) -(2)(2)(2) i don't know: e) (-1) (-1) i got : 1 f) -4*4 i don't know:

math

If 1/2 of a number, 1/3 of the number, 1/4 of the number, and 2/7 of the number are added together, the sum is 575. What is the number? Please show steps/work.

Langauge

I NEED HELP WITH MY LANGAUGE WORK!!! I need to unscramble "PRLAUGNILIBETLIC"! sOMEONE PLEASE HELP!!!

Chem

At 58.8 degrees C and at a total pressure of 1.00 atm the mole percent of acetone in the vapor state above a solution of acetone and water containing 70. mol % acetone is 87.5%. Assuming the solution to obey Raoult's Law, determine the vapor pressure of pure water at this ...

Spanish

Can someone please check my work? These students are at school. Put the senence in the correct order using the correct form of the verb ir. 1. Sandra y Pablo/gimnasio (ir) Sandra y Pablo van al gimnasio. 2. yo/todos los dís/a la escuela (ir) Yo estoy a la escuela todos los d...

Government

Compare and contrast how public versus a private organization might address the immigration policy differently. include an explanation of how the delivery system of a public organization would be different than that of a private organization. for placement agency and private ...

Math

5L= ?cL 102mL= ?L 1895g= ?kg 2.3kg= ?g What is the square root of 36/49? Please check this table to find the equivalents. (Broken Link Removed) Using my calculator, 36/49 = 0.7346938 Hitting the square root button gives us 0.857148 << What is the square root of 36/49?>...

check chem!

Can u please check. Would this answer be right? #1) In reference to the information given above, determine the following. A 0.10 mol/L solution of H2Te(aq) is prepared and found to have a pH= 1.85. Calculate the Ka value for H2Te(aq). The Ka value for H2Te is 0.002279mol2/L2...

Health info

please check my answer thanks :) Mr. Jones, angry at Dr. Bob , throws a punch at him but misses. Dr Bob sues for battery. why will Dr Bob lose? 1.There was no physical contact 2. Dr Bob was not harmed I picked #1 no physical contact

How dogs learn

Please check my answer thanks True or False The statement below describes classical conditioning... Classical conditioning involves the paring of a conditioned stimulus with an unconditioned stimulus I picked True

Math(Please check)

The following function is one-to-one; find its inverse f(x)=x^3+5 I know that the first step would be to set y = to x so I did y=x^3+5 Then you swap x with y so x=y^3+5. Then you solve for y and this is where I think i messed up. I did y^3=x-5 = y=x^3-5 Then the inverse would ...

Spanish 8th grade-Could someone please check this

Mexico DF is the word for Mexico City in Spanish I think that is false because they either say Mexico or el DF referring to Districto Federal, correct? They never say Mexico DF do they?

Trigonometry, can someone check this please

A sled travels from point A at the top of a hill to point B at the bottom. If the sled travels 120 m from A to B and the vertical descent AC is 50 m, what is the angle of depression to the nearest degree? arctan=50/120

Social Studies (Check, Please!)

With that policy is John Foster Dulles associated with? A: John Foster Dulles is associated with brinkmanship—the willingness to go to the brink of war to force the other side to back down.

Spanish

Please check my answer. Are all the accent marks, grammar, and spelling correct? ¿Qué hago para ponerme en forma? Para ponerme en forma hago ejercisios y como bien.

ENGLISH CHECK

English is my second language; please help me to solve few sentences Which one is a complete sentence? Yesterday in the morning while I was asleep Cornered by deer in late evening while talking on my cell and listening radio Because I finished my home work, I may go out. I ...

English

I used your synonym link. I included the words I found in parentheses. Can you check if they are appropriate, please? Thank you. ) The festival is held in Park City, Utah and represents one of the world’s premier showcases (synonym: main settings?) for new, independently ...

Physical Science

How much work is needed to raise a 110-kg load of bricks 12 m above the ground to being under construction? work in joules= weight*height where weight is mass*9.8m/s^2

Algebra 2 help

1. (3ã6 * 4ã6)^12 Answer :6^7 2. 3ã9 * 3ã6 / 6ã2 * 6ã4 Answer: 3 Can you guys show me how to work those? I got the answers from back of the book, but I have no idea how to work it. The number behind the square root sign is the nth.

algebra

A survey of 2,000 people was given to find their mode of transportation to work each day. The pie chart below gives the results. Of the people surveyed, how many travel by bike to work?

Intergrated science

I need help... I don't know where to begin to answer this question. We are working in force/work ok... This is the question: A pole vaulter weighing 175 lbs leaps 16 ft over a bar . How much work is done?

science

how do you calculate the missing variable in work and power;example:you must exert a force of 4.5N on a book to slide it across a table .if you do 2.7J of work in the process,how far haveyou moved the book

Math

Jake can carry 6 1/4 pounds of wood in from the barn. His father can carry 1 5/7 times as much as Jake. How many pounds can Jake's father carry? Answer: 1 3/28 Can you please double check the above answer. I don't know if it is right or wrong. 2. A glass can hold 3 1/3 cups of...

help asap please

GUIDELINE: Set achievable goals for your work unit. If I were going to set achievable goals they would be meet the deadline. Have the work be the best it can be. An example: Writing a research paper and the goals for it could be the following. To beat the deadline, to have the...

chemistry

ho do you calculate final temperature? anyone please help thanks that's a little vague. Are you dealing with ideal gases? If so you would use the formula PV=nRT P = pressure V = volume of container n = moles (grams/molar mass) R = gas constant (0.0821) T = temperature sorry ...

spanish

Estoy interesado en conocer gente Quiero ver y experimentar otras culturas. Quiero aprender otras culturas. Quiero descubrir nuevas comidas y las personas. Quiero ver cómo es la vida sobre. Estoy interesado en sacar fotos de otros del país. Quiero probar diferentes alimentas...

algebra inequalities

can you check these tell if the number after the: color is a solution x < 7; 7 i say yes p > -3;3 i say yes k is greater than or equal to 5; 0 i say no 3z is less than or equal to 12;4 i say yes n - 5 > 3; 6 i say no 2g + 8 is geater than or equal to 3;-1 i say yes ...

Ethics

describe the role civil disobedience played in the civil rights movement It was central. http://www.answers.com/civil%20disobedience <~~Be sure to scroll down and read Britannica's and other entries. Please note that we don't do students' homework for them. Once you have ...

Math

please check my answer thanks :) How much money must be deposited now, at 6% interest compounded semiannually to yield an annuity payment of $4,000 at tha beginning of each six-month period,for a total of five years? Round your answer to the nearest cent. A. $38,120.80 B. $35,...

spanish

"tengo que llevar un plato a la fiesta de Marta, pero no sé cocinar muy bien. ¿Qué debo hacer?" "Sugiero que _____ una enselada de frutas." a. prepares b. preparas c. preparabas d. preparo B i know i asked this before, but i forgot if Sra said it was correct or not please ...

English

Could you please check these sentences, too? THank you. 1) I've just received an email from our national agency informing me that the deadline to apply to them for a preliminary visit to define the topic of our project was 18 November. What do you think we can do now? Do you ...

math

It takes Bill 24 minutes to type and spell check 10 pages. Find how many pages he can type and spell check in 5.5 hours. Round to the nearest whole number if necessary. A. 55 pages B. 138 pages C. 792 pages D. 229 pages

English

Could you please check my sentences, please? Thank you, Writeacher. 1) You can't get out of it: you must confess that you have broken the vase. We were having dinner when the lights went out. 2) The teacher invited me to look up the unknown words in the dictionary. 3) Would ...

Algebra II

Please help me out with this The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100 are written with blue marker on slips of paper. All the papers are put into a bag and shuffled. One card is randomly selected. a. Find the ...

Geometry-Please check

I have two questions If a parallelogram is a rhombus, then the diagonals are congruent- I don't think so-they can bisect each other and are perpendicular, correct but not congruent Secondly, A kite is a quadrilateral that has exactly 2 pairs of consecutive congruent sides-I ...

Foreign languages

Can you please check these questions, Witeacher? Thank you. 1) Focus on Chapter 10 of Stevenson's Dr. Jekyll and Mr. Hyde and describes how Dr. Jekyll manages to separate his two identities. 2) What kind of narrative technique does Stevenson adopt? 3) In what way are Dr. ...

Chem Check Please!!!

A voltaic cell is constructed that uses the following reaction and operates at 298 K: 2 Al(s) + 3 Mn2+(aq) 2 Al3+(aq) + 3 Mn(s). What is the potential, E, of this cell when [Mn2+] = 0.10 M and [Al3+] = 1.5 M? Answer: The EMF of this cell under standard conditions is : +1.66 V...

chemistry- can you check my answers?

can you please check my answers?? 9. For the following reaction delta H=2816 kj. 6 CO2(g) + 6 H2O(l) -> C6H12O6(s) + 6O2(g) how is the equilibrium yeild of C6H12O6(s)affected by each of the following? a) increasing pressure of CO2 increase decrease no effect Answer: ...

MATH!+ check please~ thanks in advance!

the equation 2x^2+ cy^2+Dx+Ey+f= 0 represent a conic. state the value(s) of C for which each of the following are possible: A circle: My answer: c= 2 an ellipse: My answer: c>0, cant equal 2 Parabola: My answer:c=0 a hyperbola: My answer: c<o ( any negative number) are ...

HIPPA Law

At what point during the course of treatment of a new pt should the notice and disclosure of health info ,required under HIPPA be given and why ? Please check my answer. I think that it should happen before treatment begins. does anyone else agree or have any other thoughts

Science 8th grade

Please check my answer thanks What's the potential benefit of administering CPR to a person whose heart has stopped beating? A. Prevent blood clots B Prevent permanent brain damage C Prevent pericardial effusion D Prevent heart failure I picked D

Advanced Math

Can someone check these for me? Please? Use half-angle identity to find the exact value of cos165 degrees. (-1/2) sqrt(2+sqrt(3)) Write the equation 2x+3y-5=0 in normal form. (-2sqrt(13)/13)x- (3sqrt(13)/13)y+ (5 sqrt (13)/13) = 0 Find the distance between the lines with ...

CHEMISTRY: DUE TONIGHT. CHECK MY ANSWER?

1. For the simple decomposition reaction below, rate = k[AB]2 and k = 0.40 L/mols. AB(g) A(g) + B(g) If the initial concentration of AB is 1.60 M, what is [AB] after 13.0 s? ANSWER: (.4)(13)=5.2 1/1.6=.625 5.2-.625=4.575 1/4.575= .2185 I tried .22 & .21. They are both wrong. I...

English/Lit

I posted this earlier and someone suggested google-I did research various sites but I was wondering if anyone could perhaps check my answers and see if they would be a correct analysis-thank you I have two questions I'm working on for home work-could you check my answers and ...

Chemistry(please check, thank you!!)

Is this equation balanced? CoCl2(aq) + Na2CO3(aq) -> CoCO3(s) + 2NaCl(aq) I think that it is because there is 1 Co on the left and 1 on the right. There is 2 cl on the left and 2 on the right. 2 Na on the left and 2 on the right and 3 CO on left and on right. Am I correct...

math

Winborne has 35 coins consisting of dimes and nickels. If the value of his coins is $3.30 then how many of each type does he have? Please help to check on correct answer my answer is 31 dimes and 3 nickels

Algebra 1

1.) Which best describes a system of equations that has no solution? •consistent, independent •inconsistent, dependent •consistent, dependent •inconsistent* ANSWER: D Please check my answer, thank you!

geometry

User: Courtney Thompson In Course: Geometry V8 ( 2167) Instructor: Tracie Morgan -------------------------------------------------------------------------------- WARNING: You must not leave this exam form! If you try to click back into this exam again prior to submitting, your...

Social Studies

Which statement explains why division of labor increases work productivity? 1. Employers can pay workers more money when they get more done. 2. Employers must fire some of their workers so fewer people have to get the work done. 3. Workers learn their jobs more quickly when ...

Math

This is the same equation as before just with different numbers. y=yo + (vo sin Q) t - 1/2gt^2 This time the numbers are: 0 = 1.005 + (3.021 sin 30)t - 1/2(9.8)t^2 4.9t^2 - 1.5105 - 1.005 = 0 This is the part where I am stuck. Did I do this correctly? sin 30 = 0.50 X 3.021 = 1...

math

I am a little confused on the first question of this problem could someone please check my answers and please explain why and what I need to do to get correct answer thank you Calculate the mean, and write this as a mixed fraction. 12,9,4,6,8,12,13,14,11,5,12,2,9,13 answer I ...

Algebra

Ok, I tried watching a video on how to solve a system by substitution. But I feel like I did it wrong, so can someone check my work and show/ tell me where I went wrong. So the system by substitution -2x-3y=-2 Y=2x+6 First I combined my 2 equations but without y so I’d have ...

bioethics

explain Dale Jamieson's "Denver Smog Argument" Is the argument good I couldn't find a copy of this work online. Please post your explanation of his argument and opinions about it. We'll be glad to critique your thinking.

Math

Landon is working one plans for a 12-acre housing development. A park will cover 2 1/2 acres, and paved areas will take 1 3/4 acres. How many acres are left for home sites??? Please show work, for how you did it

social studies

We were worked in all weathers. It was never too hot or too cold it could never rain blow hail or snow too hard for us to work in the field. Work work work The longest days were short for him and the shortest nights too long for him. Which statements best paraphrases the view ...

english

Good suggestion from Bob Pursley. Also, if you want someone to check your work, please be sure to re-post with the answers you've come up with. =) words that begin with IN a narrow strip ofwater which goes from a sea or lake into the land-I N _ _ T food or drink that is I N _ ...

English

1. Take exercise on a regular basis, and you will be a happy person. 2. Earn a lot of money, and you will be a happy person. 3. Drive in the country, and you will be a happy person. 4. Play the violin, and you will be a happy person. 5. Play soccer with your friends, and you ...

math

From the following data calculate final balance and forward it in the pay stubs. Beginning balance $2000 Jan 2 Deposit $500 Jan 10 Check written to Alex company $600 Jan 16 Check written to Angels Company

Physics (please check)

Please let me know if my answers are not correct/not thorough enough. 1) Q:What happens when the number of loops in the armature of a generator is increased? 1) A:More loops= more voltage _________________________ 2) Q: Why does a piece of iron behave like a temporary magnet ...

History of health care

Please check my answer thanks :) The American Association Of labor Legislation helped to Decrease public hospital costs or to implement fee schedules I said decrease public hospital costs

language please check

1-the baby was the PRINCIPLE reason for his happiness 2-the jury heard only the PRINCIPLE facts 3-It's not the facts that upset me,it's the PRICIPALS of the case 4-his hay fever was the PRINCIPLE reason for his sneezing 5-she was a person of strong PRINCIPLE

english

Please check the meaning: "Like a cat in a corn crib, the girl pup sneaked in from behind and sank her needlesharp teeth in the coon's back." Just the "like a cat in a corn crib" part. Thanks!

Chemistry(Please check, thanks)

Which choice below has the highest standard molar entropy? SiCl4(s), CCl4(g), CCl4(l), Si(Cl4(l) I know that the gas state has the largest entropy so SiCl4(s) would have the highest. Is my answer correct? Thank you!!

Grammar

Recent graduates often demonstrate poor writing skills, hiring managers say. Subjects is graduates Verb is often Object is skills Please check my answers for subject, verb and objects.

math help please check my answer

A roofer is standing on the roof of a house 60 ft above the ground. His truck is parked 25 ft from the house. What is the angle of depression from the roofer to his truck? Round to the nearest whole degree. 22° 23° 67° 68° <my answer choice

Language Arts

3. In "All Together Now," Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then, explain whether you find Jordan's appeals convincing, ...

algebra 1

Jaun drives to work. he averages 22mph, he returnes home averaging 32mph. total travel time is 2.25 hours. a. define a variable for the time Jaun takes to travel to work. write an exprension for the time it takes to return home. b. write and solve an equation to find the time ...

Physics

A rescue helicopter lifts a 70 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 9 m.  What is the tension in the cable?  How much work is done by the tension in the cable...

calculus-can someone please help me with this ques

Given the following polynomial find, a. zeros and the multiplicity of each b. number of turning points c. end behavior f(x)=(x-1)(x-5) a. the multiplicity of (x-1)(x-5) x=1 and x=5----is this correct b. number of turning points I had f(x)-0 at turning points BUT my teacher ...

8th Grade Algebra: Answer Check #2

Add or Subtract (Radicals) { this means squared 1.3{2 + 4{2 Answer: 7{2 2. 8{3 + 3{3 Answer: 11{3 3. 7{5 - 3{5 Answer: 4{5 4. 8{2 - 5{2 Answer: 3{2 5. 6{x + 7{x Answer: 13{x 6. 9{y + 3{y Answer: 12{y Multiply 7. -3x^2(4x^2-3x-5) Answer: 12x^2 8.(3b+5)(b-3) Answer: 3b^2-4b-15 9...

Language Arts (Please Check)

1)Resilient people usually a)complain when they have bad luck b) bring good luck to others c)are able to deal with others** 2)when the someone refers to pausing to " enjoy the view of the trees and the flowers below," he really is talking about a) looking down at the view from...

math

log4(x-3)=2 4^2=x-3 16=x-3 19=x Does this mean the solution would be x=19 or no solution? How would I check this to know if 19 is a solution. I know I plug it back in. Like so: log4(19-3)=2 4^2=19-3 16=16 Did i check correctly?

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