# Trig check my work please?

89,037 results, page 50

### Trig

2sin^2(x) = 2 + cos(x) interval [0,2pi) How do I solve this? Help would be greatly appreciated!

### trig

P(2, 9) is a point on the terminal side of è in standard position. What is the exact value of tan è?

### trig

Find all values of x in the interval [0, 2π] that satisfy the equation. 6 sin2(x) = 3

### trig

Triangle XYZ has vertexes at X(-4, 5), Y(-3, 5), and Z(-3, 4). Find the measure of angle Y to the nearest degree.

### trig

Find all solutions to the equation 2cos(2x) = x + 1, correct to 4 decimal places.

### trig

what is the hietgh difference between 2 walls 6 metres apart to get a 17.5 degree pitch

### trig

Q1: In a right-angle triangle the base is 50 m long and its height is 40 m .find its area

### trig

Find another angle theta between 0 and 2pi that has the same cosine as 3pi/14

### trig

Cos(-11/12) use the sum or difference formula to find the exact number

### trig

Solve the equation for exact solutions over the interval [0, 2pi]. 4 cotx+2=-2

### precalc/trig

Write the partial fraction decomposition of the rational expression. 4x^2–19x+31/ (x+2)(x^2–4x+5)

### trig

Find the exact solutions of the equation in the interval [0,2pi). sin(x/2)+cos(x)=0

### trig

Find all the solutions of 2 sinx=1-cosx in the interval from 0° ≤x<360°

### Trig

sin45cos25 + cos45sin25 = ?? a. cos70 b. sin70 c. cos20 d. sin 20 which answer is correct ??

### trig

solve for x in the following equations: 1) sin(arcsin x) = 1 2) 2arcsin x = 1 3) cos(arccos x) = 1/3

### trig

How do you decide if csc=74 is greater than or less than cos=74 without using a calculator?

### trig

If the line OP of radius and(x,y) is rotated through a certain angle about the oringin

### Precal

Write down 3 other possible trig forms for - 1 + isqrt2. How do you solve this?

### trig

Expan each of the following using the compound-angle formulae:sin(x + 20degree)

### trig

find the general solutions to the equations: 1) sec x = -2 2) 2 sin^2 x = 1 3) cos^2 x - 2cos x + 1 = 0

### trig

16. Let W(ƒá ) be a point in Quadrant I on the unit circle with center O. W(ƒá )B is perpendicular to the x-axis at B, OB = 0.6. and W(ƒá )B ƒ 0.8. Find:

### trig

Find all angles in degrees that satisfy the equationtan∝ +√3=0

### trig

Give the following for the function: y=2+cos(5x+3.14 Amplitude: Period: Phase Shift:

### Trig

y=sec(2x+1) Find the period and phase shift. Sorry i'm really bad at these.

### Trig

How do i find the exact value of sin 15 using the half angle formula

### Alg2/Trig

Write the log as a single function: logx + 2logy - logz

### trig

find the values of x between 0 and 2 pi where the tangent line to the graph of y = sinxcosx is horizontal

### Algebra & Trig

calculate the velocity of 10 meters per second with an angle of 30 degrees

### trig

Show that the height, h, of the A-frame is equal to the expression 5sinc(1+2cosc). Im not sure what to do.

### trig

find the exact value of sinu/2, given that cosu=-4/5 and pi/2less than u less than pi

### TRIG HELP

find the exact solutions over the interval tanx = 1 all real x

### trig

How would I solve this problem for t? 720 = 11.895+2.545sin [2pi/366(t-80.5)]

### trig

how to solve for the value of sine and cosine function of 0,90,180 and 270 degrees?

### Trig

Solve exactly over 0 ≤ θ < 2π secx + tanx = 1

### Trig

Convert this equation so that it could be entered into a calculator in the standard y= format. x^2 - 4xy + 4y^2 - 8y + 2 = 0

### Trig

Rewrite -2x^2 + sqrt(3)xy - y^2 +2 = 0 with the xy term eliminated. Round terms to nearest hundredth.

### Trig

Use sum and difference identitites to find the exact value of co 15 degrees

### trig

slove the equation exactly over the interval [0, 2pi) sinx=1-2sin^2x

### trig

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

### Trig

Rewrite the expression (tan A)(cot A) in terms of a single trigonometric ratio.

### math - trig

Why cant we solve an oblique triangle with the Law of Sines if we are given SAS?

### Trig

In ΔABC, a = 19, c = 10, and m∠A = 111. Which statement can be used to find the value of C?

### Trig

Find the 6th term of the arithmetic sequence with a9=120 and a14=195

### Pre-Calc/Trig

y=-x^2+5x+36 converting into intercept form is this the correct answer? y=(x+9)(x-4)

### Trig/Pre-Calc

Solve the polynomial equation. 15x^3-119x^2-10x+16=0

### trig

solve each equation if 0 < x < 2pi. answer must be in radians 1. 4 cos x - 2 = 0 2. 3 sec^2 - 4 = 0

### Pre-calc/Trig

For each parabola, tell in which direction the graph opens. x= 1/2y^2 y= -1/24x^2

### trig help

Find the equation of the hyperbola satisfying the given conditions. Vertices at (5, 1) and (-7, 1); asymptotes (y - 1) = 1/3(x + 1) and (y - 1) = -1/3(x + 1)

### trig plz help

Solve, finding all solutions in the interval [0, 2π). tan(3x) = -1

### Trig

find the equation for the cosine function that has an amplitude of 3/5, a period of 3pi/2 and a y-intercept of 5.

### Math

Find the exact value of the trig function below. cos2Ø if sinØ = 2/5

### Mathematics

Twelve man take 6 hours to finish a piece of work. After the 12 men have worked for 1 hour, the contractor decides to call in 8 men so that the work can be completed earlier. How many more hours would 20 men take to complete the remaining work?

### Sequence

Find the common difference and a formula formula for the nth term of the arithmetic sequence; 6, 2, -2, -6, -10,...a sub n = a)6-4n b)6-2n c)10-2n d)10-4n I think it is c but want to check. Ao is 10, then each term subtracts 4n from it....n=1, ... well if 6 is equal to the ...

### English

Can you check the grammar in the following sentences, please? 1) The most satisfying aspect of her work is that she doesn’t have to sit at a desk all day. 2) Though she has to write reports, she spends most of her time in court. 3) In particular, she has to question ...

### Quick chemistry check

Please check each of these mole statements. Correct me if I'm wrong! 1. 59g of hydrochloric acid (HCL)=____moles I got 1.6 moles 2. 4.6 moles of sodium hydroxide (NaOH)=___ grams I got 184 grams 3. 35.0 of sulfuric acid (H2SO4)=__ f.u sulfuric acid I got 2.15x10^25th power ...

### 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: ? b)How many atoms of iron are in ...

### English

I urgently need you to check this mail, Writeacher. I also included a few other sentences. Thank you very much. 1)I'm Mr. ....., the father of ...,who will be taking a summer course in Oxford from ... to.. 2) I just wanted to know if you have received all the required ...

### Physics

A force of 3.00N acts through a distance of 12m in the direction of the force.Find the work done. work= force *distance If force is in newtons, distance in meters, the work unit is in joules.

### French check my answers

I had to write 20 sentences , 2 sentences for each answer with 10 verbs in the present form and reprise. Please check my answers and help me to correct them, thanks 1. Je chante. Je peux chanter. 2. Tu dessine. Tu peux dessiner. 3. Il danse. Il peut danser. 4. Elle marche. ...

### Calculus 12th grade (double check my work please)

1.) which of the following represents dy/dx when y=e^-2x Sec(3x)? A.3e^-2x sec(3x) tan (3x)-2e^-2x Sec(3x)<<<< my choice B.)3e^-2x sec(3x)tan (3x)-2xe^-2x sec(3x) C.)3e^-2x sec(3x)tan (x)-2e^-2x Sec(3x) D.)3e^-2x sec(3x)tan (x)-2xe^-2x sec(3x) 2.)calculate dy/dx if...

### Math

5x{(24-19)x {(25+23)/12-(9-7)} 48 / 12 4 - (2) 5x (5) x (2) 25 x 2 = 50 Did I work this correctly? Please Help!! It doesn't come across real clear as to what the original equation was. Did you use the Orders of Operations (PEMDAS) when you solved it?

### anatomy

What is the kcalorie value of a meal supplying 110g of carbs, 25g of protein, 20g of fat, and 5g of alcohol? Please help show work

### Calculus

Can someone please work this algebra. verify that y(x) = -ln (x - cx^2) satisfies the ODE x(e^y - y') = 2 where c is constant. I have been working through this and it is way too messy.

### chem

How many moles of base are needed to neutralize 2 mol of acid for HNO3 + KOH - KNO3 + H2O?. Can u show your work please:) Thanks a bunch

### General Chemistry

Balance the following equations: a. C + O2 CO b. CO + O2 CO2 c. H2 + Br2 HBr d. K + H2O KOH + H2 e. Mg + O2 MgO please explain and show work.

### Genera Chemistry

Balance the following equations: a. C + O2 CO b. CO + O2 CO2 c. H2 + Br2 HBr d. K + H2O KOH + H2 e. Mg + O2 MgO please explain and show work.

### math

can you please work this out for me??... your bedroom is 4m (400 cm) long and 3m (300 cm) wide. If you draw a rectangular plan 2cm by 1.5 cm, what is the scale of your drawing?

### 5 th grade

What is the median fo the following set of numbers? 404,650,585,435,680,342,798 please! show me the work. thank you!

### Math- Problem3

Solve the following inequality and write your answer using interval notation. Please show all of your work. (1 / (x+8) ) ≤ ((8-5x)/43)

### Stats

Rank the following data in increasing order and find the position and value of the 56th percentile. Please show all of your work. 0 1 6 8 9 9 8 6 3 1 0 9

### chemistry

Consider the reaction Mg +2HCl ------>MgCl2 + H2 What is the minimum amount of 1.85M HCl is necessary to produce 28.5L of H2 at STP Please help me work this problem

### algebra

perform the indicated operation and if possible,simplify please show all of your work. write your answer in lowest terms. 18/35 divided by 22/25

### College Pre-Algebra

Solve -14x-7(4-x)< 3(2x-15). Write your solution using set builder notation. Please show all of your work.

### algebra

Solve the following inequality and write answer using interval notation. Please show all of your work. 2x-5/3x^4-x^3+275x-125>=0

### Pre-Calc

For the triangle shown, find the length AD. (Assume u = 18, v = 18, x = 10°, and y = 10°. Round your answer to two decimal places.) Show work please!!!

### physics

A ball its thrown straight up into the air at 50 m/s find the balls velocity after 8 seconds show all work please

### Math

Which of the following CANNOT be the average ( arithmetic mean) of four positive even integers? a) 1 b) 2 c) 6 d) 9 e) 17 ( please explain or show work. It will help me understand it better! Thanks)

### satistics

Rank the following data in increasing order and find the position and value of the 65th percentile. Please show all of your work. 2 1 6 3 4 7 0 0 0 7 5 8

### college alg

use the transformations to identify the graph of the function. then determine its domain, range, and horizontal asymptote. f(x)=4+3^X/3 please show work

### math

please explain how to use hundreds chart to answer this queston;WHAT % OF THE NUMBERS ARE MULTIPLES OF BOTH 2 AND 3? i have no idea how to work it out, thanks

### calculus

solve the following inequality. write your solution in interval notation. x^3+9x^2-108 less than or equal to 0 please show all work

### AP Calculus

Show work to determine if the relation is even, odd, or neither. 1. 3x=|y| (|y|=abs. value of y) Simplify the following complex fractions. 2. [(3/x)-(4/y)]/[(4/x)-(3/y)] PLEASE HELP!

### math/chem

If aluminum foil has a density of 2.70 g/ml, then how thick would be a 2.22 g sample of foilif it measures 5.0 cm on each side. PLEASE SHOW WORK THX!

### Algebra

Use factoring and the zero-product property to solve the following problems: z(z - 1)(z + 3) = 0 x^2 - x - 10 = 2 4a^ - 11a + 6 = 0 9r^r - 30r + 21 = -4 Please show work. Thank you so much!

### Algebra help

Find an equation of the line L, where L is perpendicular to y=3x and passes through the point (1,3) Please help I'm not sure what formula to use or how to work out this problem

### Algebra 2

More About Complex Numbers: Solve x and y 4x+5y+13i=7+(6x+5y)i Please show work because I had a hard time finding the answer

### Physics

Please help me with this question How much work is done by a boy of mass 70kg who ran up a flight of 31steps each15m high. Take g=10m/s^2

### Calculus

∫ x^3 √(16-x^2) dx evaluated between [0, 4] I know this is solved using trigonometric substitution, but I'm not sure how to work it. Please show steps so I will understand.

### Social Studies

A system in which a series of workers and machines work to add individual parts to a product is known as a(n)____and it_____. Link please to help me?

### Probability & Stats

An experiments consists of tossing 4 coins successively. The number of sample points in this experiment is a. 16 b. 8 c. 4 d. 2 Please show work and why it is the answer! Thank you!

### calc

find an equation of the line tangent to the circle (x-1)^2+(y-1)^2=25 at the point (4,-3) Can please someone explain this to me and show all work very confused

### Math

1) 60 meters of fencing are needed to fence in a square lot. What is the area of the lot? a) 3600 m^2 b) 900 m^2 c) 225 m^2 d) 15 m^2 2) A can do a piece of work in r days and B, who works faster, can do the same work in s days. Which of the following expressions, if any, ...

### probabilty

In a school, 14% of students take drama and computer classes, and 67% take drama Class. What is the probabilty that a students takes computer class given that the student takes drama class? i have no idea how to work this so please show me your work. Thanks!!

### Physics

A 260 kg piano slides 4.1 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b) Calculate the work done ...

### Physics

A 255 kg piano slides 4.3 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-35). The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b) Calculate the work done ...

### Physics

A 255 kg piano slides 4.3 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-35). The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b) Calculate the work done ...

### Physics

A 305 kg piano slides 4.0 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b) Calculate the work done by the man ...

### GOVERNMENT HELP

Where did classical liberalism start? I know it started in Europe but was it Britain or France or both? I merely want to check my work. Bob Pursley do not answer this since you are so rude by suggesting that I want you to do my homework for me. http://en.wikipedia.org/wiki/...

### Please check my answers ASAP

I did the work I just want to see if half of my questions are right then ill post my other half after this so please check and thanks very much. ----------------------------------------1.Horses 2.everything 3.Brother 4.shoesand socks 5.games 6.event 7.End and table 8.rita 1....