# Homework Help: Math: Trigonometry

## Recent Homework Questions About Trigonometry

**trig**

determine a set of parametric equations to represent the line segment that begins at the point(-2,6) and ends at the point (10,-4)

*Tuesday, November 25, 2014 by !*

**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

*Monday, November 24, 2014 by jason*

**Pre-Calc/Trig**

is the integer n odd or even, explain

*Monday, November 24, 2014 by Anonymous*

**Pre-Calc/Trig**

Help me please, I don't understand this write using exponential notation √ 36* 3√ 64 oh and 3 is an exponent

*Monday, November 24, 2014 by Anonymous*

**Trig**

Does this result in no triangle, 1 or 2 triangles? If so, then solve. B= 88 degrees, b= 4 and a=23. I know that A= (sin 88)(23)/(4)= A=5.74 degrees C= 180-5.74-88= C=86.26 degrees c=(sin86.26)(4)/(sin 88)= c=3.99 My question is how do you know if it's 0,1, or 2 triangles. And ...

*Sunday, November 23, 2014 by Amber*

**Trig- math**

Find the area of a triangle if the sides of the triangle have the lengths 849mi, 930mi, and 1301mi. Here's my work: a=849 b=930 c=1301 A=.5(849)(930)sinA sin A = 394,785 mi^2 (this number doesn't seem right to me, can you explain to me what I did wrong)?

*Sunday, November 23, 2014 by Alexis*

**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?

*Sunday, November 23, 2014 by IHS*

**Trig**

I need help with my vectors unit. I'm really confused about how to set them up. Please help. a.) Given u=2i-5j and v=-i+3j, determine -6u-3v? b.) Find the component form of v if |v|=4 and the angle it makes with the x-axis is 60 degree. c.) Given u=5i+3j and v+3i+2j, find (u)(...

*Sunday, November 23, 2014 by Alexis*

**Trig**

Find the magnitude and direction angle for each vector. Give the measure of the direction angle as an angle in [0,360]. <5sqrt2,-5sqrt2>

*Sunday, November 23, 2014 by Freddie*

**Math (trig)**

The distance from home plate to dead center field in a certain baseball stadium is 409 feet. A baseball diamond is square with a distance from home plate to first plate base 90 feet. How far is it from first base to dead center field? I also need help setting this up.

*Sunday, November 23, 2014 by Alexis*

**Math (trig)**

A force of 35lb is required to hold a 72lb toolbox on an incline. What angle does the incline make with the horizontal? Please help me set this up.

*Sunday, November 23, 2014 by Alexis*

**Trig**

Two tracking stations are on the equator 161 miles apart. A weather balloon is located on a bearing of N 32°E from the western station and on a bearing of N 16°E from the eastern station. How far is the balloon from the western station? Round to the nearest mile.

*Wednesday, November 19, 2014 by Nicole*

**trig**

a boat is tied by a rope 12 meters long to a ring that is 3.5 meters above the water.If the rope is taut find the angle it makes with the water?

*Tuesday, November 18, 2014 by Anonymous*

**Trig**

Jane has a bike with a 22-inch rear wheel. The wheel sprocket is 3 inches in diameter and the pedal sprocket is 4 inches in diameter (the sprockets hold the chain.) How fast in miles per hour is she going if she pedals at a rate of 100 revolutions per minute?

*Monday, November 17, 2014 by Dan*

**Trig**

the angle of elevation to the sun is 65 degrees. A building casts a shadow 16m long. What is the height of the building to the nearest meter?

*Monday, November 17, 2014 by Julia*

**Pre-Calc/Trig**

Go over this with me please, I forgot how to do it. Solve the polynomial equation. 15x^3-119x^2-10x+16=0

*Monday, November 17, 2014 by Anonymous*

**trig**

From the top of a tower of height 75m, a man sees two goats, both due west of him. If the angles of depression of the two goats are 10 degrees and 17 degrees, calculate the distance between them. It wants the angle of depression. I , myself, don't understand the question or ...

*Monday, November 17, 2014 by Anonymous*

**Derivative**

Can you help me find the derivative of y= cos(x)/1+sin(x).. the / is a fraction bar. I have a hard time finding trig derivatives because I don't really know what the derivative of cos,sin ,or tan would be honestly.

*Sunday, November 16, 2014 by Angel*

**Trig**

Determine the intervals of continuity of f(x)= ln(sin(x)) I looked at the graph and I have no idea how to state the intervals.

*Sunday, November 16, 2014 by Jet*

**Math**

This one confused me since it revolved around what seemed like dividing trig function by another function Write the following expression in terms of the tangent function 2 / ((cos(r^2 - s^2) / (sin(r^2 - s^2)) = ? I know tan t = sin t / cos t. So would I multiply by the ...

*Friday, November 14, 2014 by Taylor*

**Pre-Calc/Trig**

Identify the asymptotes, removable discontinuities, and intercepts for the graph of the function. d(x)=(x^2-12x+20)/3x

*Friday, November 14, 2014 by Anonymous*

**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

*Friday, November 14, 2014 by Anonymous*

**Trig/Pre-Calc**

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

*Thursday, November 13, 2014 by Anonymous*

**Pre-Calc/Trig**

State the domain and range for each function. y=2x^2/(x^2-1) domain: ? range: ?

*Wednesday, November 12, 2014 by Anonymous*

**Pre-Calc/Trig...**

Write a function with the following characteristics: A vertical asymptote at x=3 A horizontal asymptote at y=2 An x-intercept at x=-5

*Wednesday, November 12, 2014 by Anonymous*

**Pre-Calc/Trig**

Identify the extrema for the function. Classify it as a relative (local) or absolute (global) maximum or minimum value. f(x)=4x^3-12x^2+15

*Tuesday, November 11, 2014 by Anonymous*

**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

*Tuesday, November 11, 2014 by sara*

**Pre-Calc/Trig**

Describe the end behavior for function by writing a limit expression. f(x)=2x^5-x+7

*Tuesday, November 11, 2014 by Anonymous*

**Precalc/Trig**

Sorry there are quite a few problems, but I just need to know if these are correct (and if they aren't, where I went wrong): 1. Solve these equations. tanθ = -√3 θ = 2π/3 + kπ θ = 5π/3 + kπ 2. secθ = √2 θ = π/4 + 2k...

*Tuesday, November 11, 2014 by Heather*

**calc/trig**

A 84-ft tree casts a shadow that is 130 ft long. What is the angle of elevation of the sun?

*Monday, November 10, 2014 by hm*

**trig**

Find all angles è between 0° and 180° satisfying the given equation. cos è = 1/9

*Monday, November 10, 2014 by Anonymous*

**Pre-Calc/Trig**

Help please State the x and y-intercepts for each function. f(x)= -x^3+4x

*Monday, November 10, 2014 by Anonymous*

**Pre-trig/Calc**

Please help me. Use Descartes' rule of signs to describe the roots for each polynomial function. 3. m(x)=x^3+3x^2-18x-40

*Sunday, November 9, 2014 by Anonymous*

**trig**

if x is a positive acute angle, then express tan(180+x) as a function of x

*Saturday, November 8, 2014 by eeep*

**Trig**

House B is located at a bearing of N67°E from house A. House C is 370 meters from house A at a bearing of S68°E. House B is located at a bearing of N11°W from house C. Find the distance from house A to house B. (Round your answer to two decimal places.) Sorry, I would post ...

*Saturday, November 8, 2014 by Kate*

**Math Trig Please Help!!!**

Find exact values for all the solutions to the equation cos theta = sqrt 3/2 for -2pi <= theta <= 2pi Theta = Theta = Theta = Theta =

*Friday, November 7, 2014 by George*

**Pre-Calc/Trig**

Use Descartes' rule of signs to describe the roots of the polynomial function. m(x)=x^3+3x^2-18x-40

*Friday, November 7, 2014 by Anonymous*

**Pre-Calc/Trig**

Help me please. List all possible rational zeros for the polynomial function. p(x)=3x^3-2x^2-5x-2

*Friday, November 7, 2014 by Anonymous*

**Math Trig Help**

sin theta = x/3, with theta in the first quadrant, find the expression for cos theta and tan theta. Answers will be in algebraic terms of x. Give exact answers with 0 < theta <pi/2 (0 less than or equal to theta, less than or equal to pi/2 Cos theta ? Tan Theta?

*Friday, November 7, 2014 by Leeroy*

**Trig**

A playground slide starts 107cm above the ground and is 250cm long. What angle does the slide make with the ground? Give the answer to the nearest degree.

*Wednesday, November 5, 2014 by Anonymous*

**TRIG WORD PROBLEMS**

from 25 feet away from the base of a building, the angle of elevation from the ground to the top of a building is measured 38 degrees. how tall is the building. WHat i did was put 25 feet on the base of the triangle the angle measurement oppsite and the longer leg x is this ...

*Tuesday, November 4, 2014 by Albert*

**RIGHT TRIANGLE TRIG**

a kite is being flown 150 yards of string. the kite has an angle of elevation with the ground 65 degrees. how high above the ground is the kite. I DON'T KNOW HOW TO SET UP THE PROBLEM

*Tuesday, November 4, 2014 by Albert*

**Pre-Calc/Trig...**

Help me please Is the given linear expression a factor of the polynomial? Show work. f(x)=2x^3+x^2-5x+2; x+2

*Friday, October 31, 2014 by Anonymous*

**Math/Physics**

My question is this: The potential at the surface of a sphere (radius R) is given by V_0 = k cos 3theta where k is constant. Find the potential inside and outside the sphere as well as the surface charge density (lower case sigma(theta)) on the sphere. (assume there is no ...

*Thursday, October 30, 2014 by Kim*

**Physics**

To move a large crate across a rough floor, you push on it with a force (F) at an angle of 21 degrees below the horizontal. Find the force necessary to start the crate moving, given the mass of the crate is 32 kg and the coefficient of static friction between the crate and the...

*Thursday, October 30, 2014 by blahblah*

**Trig**

I need to the steps to get (1-sinx)(1+sinx)=cos^2 x

*Tuesday, October 28, 2014 by Jaime*

**Algebra 2 & trig**

joanna invested $7500, part at a 5.5% and the remainder at a 6% annual rate of interest. if she collected a total of 435 in interest at the end of one year, how much money was invested at each rate?

*Tuesday, October 28, 2014 by Emily*

**Trig**

A weight is oscillating on the end of a spring. The position of the weight relative to the point of equilibrium is given by y=1/12(cos8t-3sin8t), where y is the displacement (in meters) and t is the time (in seconds). Find the times when the weight is at the point of ...

*Monday, October 27, 2014 by Nicole*

**Pre-Calc/Trig**

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

*Monday, October 27, 2014 by Anonymous*

**Pre-Calc/Trig**

How?? I only know how to convert standard form functions into intercept form, but I do not understand how to do this. Convert the functions into standard form. 1.y=2(x-4)(x+3) 2.y-2=-3(x+4)^2

*Monday, October 27, 2014 by Anonymous*

**Pre-Calc/Trig**

I have looked this up, but still cant figure out what it is.. What is the projectile motion function?

*Monday, October 27, 2014 by Anonymous*

**Calculus/pre-trig**

Write the formula for the discriminant. State the types of roots for a quadratic equation, explaining how the discriminant helps you determine the type.

*Saturday, October 25, 2014 by Anonymous*

**trig**

simplify tan(-17 degree)+sin(24 degree)+cot(73 degrees)+cos(66 degrees in(-24 degree)

*Saturday, October 25, 2014 by Reda*

**Pre-Calc/Trig**

How would I solve this one? I just can't get this one. 6x^2+11x-35=0

*Saturday, October 25, 2014 by BelovedAngel*

**Pre-Calc/Trig**

Have i solved this correctly? x^2+3x-28=0 (x+7)(x-4)=0 x=-7 or 4

*Saturday, October 25, 2014 by BelovedAngel*

**Pre-Calc/Trig**

How would I solve this? x^2+10x+24=0

*Saturday, October 25, 2014 by BelovedAngel*

**Math, Trig/Pre Calc**

You have been asked to build a ramp for Dan’s Daredevil Motorcycle Jump. The dimensions you are given are indicated below. Find the height and incline in feet. Round to the nearest foot One side is 200 ft.The angle between the hypotenuse and the side of 200 ft is 13 degrees...

*Friday, October 24, 2014 by Sarah Blanchard*

**Pre-Calc/Trig...**

Help me please Standard form: y=x^2-2x-3 Vertex form: ??? Intercept form: ???

*Friday, October 24, 2014 by Anonymous*

**Math Trig**

I'll do my best to describe this problem. Given A=17 degrees, B=73 degrees , x=q, y=5 and z=r use the figure to find the exact value of q and r x = base y = leg z = hypotenuse a = angle between z and x b = angle between z and y 90 degree angle = between x and y Solve for q and...

*Friday, October 24, 2014 by Stanley*

**Trig calc**

Find the coordinates of the point at -45 degrees on a circle of radius 3.6 centered at the origin. Round your answers to three decimal places.

*Friday, October 24, 2014 by Perry*

**Trig**

Find the coordinates of the point at -10 degrees on a circle of radius 2.7 centered at the origin. Round your answers to three decimal places.

*Friday, October 24, 2014 by Collen*

**Math Trig**

A kite flier wondered how high her kite was flying. She used a protractor to measure an angle of 40 degrees from level ground to the kite string. If she used a full 120-yard spool of string, how high, in feet, was the kite? (Disregard the string sag and the height of the ...

*Friday, October 24, 2014 by Randy*

**Trig calc**

A) P is approximately (0.883, 0.469), is a point on the unit circle with angle 28 degrees estimate the following. Sin 152 degrees = Cos 152 degrees =

*Thursday, October 23, 2014 by Randy*

**Trig / Calc**

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

*Thursday, October 23, 2014 by Randy*

**Trig/Pre-Calc...**

Please help me with this. The finishing time for a runner completing the 200-meter dash is affected by the tail-wind speed, s. The change, t, in a runner's performance is modeled by the function shown below: t= 0.0119s^2 - 0.308s - 0.0003 Predict the change in a runner's ...

*Thursday, October 23, 2014 by AbelovedAngel*

**Trig**

Verify and identify, I am so confused on how to do this? this is an extra credit but I am lost, please help. cot(Ý-ƒÎ/2)=-tan Ý

*Wednesday, October 22, 2014 by Maxine*

**Pre-Calculous (Trig)**

The Singapore Flyer, currently the world's largest Ferris wheel, completes one rotation every 37 minutes.1 Measuring 150 m in diameter, the Flyer is set atop a terminal building, with a total height of 165 m from the ground to the top of the wheel. When viewed from Marina ...

*Friday, October 17, 2014 by Randy*

**Pre-Calc/Trig...**

Helpp needed, this is sort of confusing me. Describe the nature of the roots for this equation. 2x^2-x+1=0 A. Two real, rational roots B. Two real, irrational roots C. One real, double root D. Two complex roots

*Friday, October 17, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Simplify 1. √-36 2. -√-625

*Friday, October 17, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Solve the equation: (x-3)(x+2)=0 Enter the solution with the lowest value.

*Thursday, October 16, 2014 by Anonymous*

**Pre-Calc/Trig...**

A ball is thrown upward with an initial velocity of 4ft/sec from a height of ten feet. what is the maximum height that the ball will reach. h(t)= -16+vt+s

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Solve using any method. 1. 2x^2+5x-3=0 2. -x^2+x+1=0

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Use the discriminant to determine the nature of the roots. 1. 2x^2+5x-3=0 2. -x^2+x+1=0

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me do this please. Simplify the expressions using imaginary numbers. 1. √-16 2. √-49

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am I right? Consider the function y=x^2+5x-2. What would happen to the graph if (x - 3) was substituted in place of the x? A. The graph would shift up 3 units. B. The graph would shift down 3 units. C. The graph would shift 3 units to the right. <--- D. The graph would ...

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Which of the following accurately depicts the transformation of y=x^2 to the function shown below? y=5(x-2)^2+1 A. Shift 5 units right, stretch vertically by a factor of 2, then shift up 1 unit. B. Shift up 1 unit, stretch horizontally by a factor of 5, then ...

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am i correct? A vertical shift is an example of a non-rigid transformation. True

*Tuesday, October 14, 2014 by Anonymous*

**Pre-Calc/Trig...**

am i correct? What is the axis of symmetry for the graph of y=2x^2-4x+2? x=? the line goes through 1? x=1

*Tuesday, October 14, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am i correct? The graph of y=3x^2-4x+2 opens downwards. FALSE The graph of y=2x^2-4x+2 has a y-intercept of (0,1). FALSE

*Tuesday, October 14, 2014 by Anonymous*

**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?

*Monday, October 13, 2014 by Anonymous*

**trig**

from a top of a hill

*Sunday, October 12, 2014 by alexander*

**Pre-Calc/Trig...**

Which of the following quadratic functions has a graph that opens downwards? check all that apply A. y=2x^2-9x+3 B. y=x^2+4x+8 C. y=-(5+2x^2) D. y=60x-15x^2

*Thursday, October 9, 2014 by Anonymous*

**Pre-calc/Trig...**

which of the following are quadratic functions? check all that apply 1. y=2x^2-3x+7 2. y=3x-4 3. y=(5x-3x^2)/4+1 4. y=x-x^3

*Wednesday, October 8, 2014 by Anonymous*

**Pre-Calc/Trig..**

Write a function for the graph described as a transformation of y=x^2 y=x^2 experiences a vertical stretch of factor 2 and then a shift right of 3 units.

*Tuesday, October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=(x+5)^2

*Tuesday, October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=x^2+7

*Tuesday, October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

vertex form:y-4=-(x-4)^2

*Monday, October 6, 2014 by Anonymous*

**Pre-Calc/Trig...**

standard form: y=x^2-4x-5 vertex form: ? intercept form: ?

*Monday, October 6, 2014 by Anonymous*

**trig**

The centers of two belt pulleys, with radii of 3 cm and 6 cm, respectively, are 13 cm apart. Find the total area K enclosed by the belt.

*Monday, October 6, 2014 by Gary*

**Pre-Calc/Trig...**

if h(x)=(fog)(x) and h(x)=3√x+3 find g(x) if f(x)= 3√x+2

*Saturday, October 4, 2014 by Anonymous*

**Pre-Calc/Trig...**

Assume f(x) = -2x + 8 and g(x) = 3x. What is the value of (f + g)(-1)?

*Friday, October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am i correct? It is possible for a system of linear equations to have no solutions. True <-- False i think it's true, if the lines are parallel?

*Friday, October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29

*Friday, October 3, 2014 by Anonymous*

**trig**

what is the angle of elevation of a 15 foot ladder leaning 12 feet up a building?

*Friday, October 3, 2014 by tay*

**Pre-Calc/Trig...**

Let y = 4t + 2 be a linear function representing the distance from home for an ant t minutes after starting out from a location near its home. What does the number 4 represent in this function? The ant is 4 feet from its home after t minutes. The ant started out 4 feet from ...

*Friday, October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

If f(x)=1/(x+2), what is f(3+h)? A. 1/(3+h) B. 1/(h+5) C. 1/(x+2)(3+h) D. (3+h)(x+2)

*Friday, October 3, 2014 by Anonymous*

**algebra2/ trig**

The figure at the right shows three circular pipes all with 12inch diameters the have been strapped together by a metal band.What is the lenght of the band? I don't even know where to start , please help?

*Wednesday, October 1, 2014 by Amber*

**Trig**

Two planes take off at the same time from an airport. The first plane is flying at 240 miles per hour on a bearing of S 45.0° E. The second plane is flying in the direction S 45.0°W at 290 miles per hour. What is the bearing of the second plane from the first after 5 hours...

*Wednesday, October 1, 2014 by Lindy*

**Pre-Calculus/Trig...**

Help Please For the function defined by: f(x)= (x^2,x≤1) (2x+1,x>1) Define f(0). and also how would i graph f(x)?

*Wednesday, October 1, 2014 by Anonymous*

**Math Pre-Calc/Trig**

If 11 square meters of tile are available to make a rectangle whose width must be 6 meters less than its length, what would be the dimensions of the rectangle?

*Tuesday, September 30, 2014 by Jen*