Monday
September 22, 2014

Search: Trigonometry help please!

Number of results: 48,323

spanish
is this translated right? In the morning I wake up at 8:30 a.m. The first thing I do is brush my teeth and comb my hair. Then I eat breakfast. By 9:00 a.m., I start my schooling (home). The first thing I work on is trigonometry. Then I do English, Trigonometry, American ...
May 3, 2009 by y912f

plane and spherical trigonometry
trigonometry in oblique triangles
August 3, 2014 by keicer

trigonometry
Please solve this equation. As you write down the steps, please give me a description on what you did. y^3 - 16y^1/2 + 64 = 0
January 9, 2008 by Hellga

Trigonometry
I really need help with this trigonometry question.please any help is appreciated. 1.I have to draw the graph of y=cos x from 0deg to 360deg. 2.Be sure to show a table of vales similar to the this table. colum X l colum :y=sinx 0 l 0.00 pi/10 l 0.31 pi/5 l 0.59 3pi/10 l 0.81 ...
March 7, 2011 by anon

Trigonometry
4cos^2x-5sinxcosx-6=0 find the x :( please
March 9, 2014 by cassy

trigonometry
Simplify:2sec^2A-2/4tan A...Please help,anyone who can answer
June 5, 2011 by Ruby

TRIGONOMETRY ASAP PLEASE :3
Solve for the ambiguous triangle. 1. Given: A=45; a=3; b=5 2. A=25; a=3; b=6
November 19, 2012 by JEZRELL

trigonometry
can you please tell me what is the sec of (-855 degrees). and how to find it. thnks
January 7, 2009 by y912f

Algebra/trigonometry
The expression (3-7i)^2 is equivilant to? i know what the answer is im just not sure how to get it please help
May 18, 2010 by Sally

Trigonometry
The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!
December 26, 2010 by Katy

Trigonometry
The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!
December 26, 2010 by Katy

Trigonometry
The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!
December 26, 2010 by Katy

Pre-Calculus/Trigonometry
Help me please, just explain. How would I find f(1)? f(1)= x; -3, -2, -1, 0, 1, 2 f(x); 3.4, 0, -1.2, 0.4, 1.3, 1.7
September 8, 2014 by Haila

Grammar
Replace with or replace for? Sentence: I want to replace algebra (with/for) trigonometry. If I use the word with, then does that's an I want trigonometry and not algebra? If I use the word for, then does that mean I want algebra and not trigonometry? Any rules?
August 29, 2013 by Anonymous

Trigonometry
Find the domain of each function. And show your steps please. f(x)=x/x^2+1 f(x)=2x^2/x-3 f(x)=Square root of 5-x f(x)=x^3/x^2-16
October 9, 2012 by Karen

Pre-Calculus/Trigonometry
Help please What is the slope of the line that passes through (1,0) and is parallel to y = 3x + 5?
September 15, 2014 by Anonymous

Trigonometry Urgent!
I am writing a paper on the 8 trigonometric identites but can't find any information on them. Please does anyone know of any websites that would have things like their history, development, applications in ancient times, origins, etc. Please help. Urgent!!!!
March 8, 2007 by kate 316

Trigonometry/ Please Help
Find two exact values of sin(cosˉ√5/6)
January 13, 2011 by CJ

Trigonometry
How do you solve the equation 5√3 secθ = 10 in degree measure? please explain.
October 4, 2012 by John

Pre-Calculus/Trigonometry
Help please Which of the following is the equation of a line that passes through the points (2,5) and (4,3)? y = -x + 7 y = x + 7 y = 2x + 5 y = -2x + 5
September 16, 2014 by Anonymous

trigonometry
determine the trend of each linear function: 1. f(x)= 3x+5 I don't know what you call the "trend" or why you call this a trigonometry question. It is about algebra. The value of the function increases with x at a rate of three times the change in x.
July 10, 2007 by hugh

12th grade
I'm having trouble ordered triple in algebra 2 w/ trigonometry, could someone please hellllllllllllllllllp me!
October 13, 2008 by She'koyea

Trigonometry
Solve tan2 x + tan x 1 = 0 for the principal value(s) to two decimal places. Please Explain
August 3, 2012 by Cynthia

trigonometry
this is exactly how the question is written and i tried to solve it but i just couldn't. Can u please show me how the work was done I dont want just the answer. using the exact values,find the value of: 12 sin 30degrees - 6 tan of 45 degress + sec 45 degrees / 52. please help!
January 9, 2011 by alex

trigonometry
this question confused me can you please show me how its done. Reduce (csc^2 x - sec^2 X) to an expression containing only tan x.
February 1, 2011 by Anonymous

Trigonometry
Find all values of x such that sinx+sin2x=0 and 0 <= x <= 2pi <= means less than or equal to please help!
January 17, 2013 by Amy

Trigonometry
The area of a rectangle is a function of the length when the width is unity. Please answer.. My mind is going crazy ):
July 10, 2014 by Glenn

Trigonometry Paper Urgent!!!
I am writing a paper on the 8 trigonometric identites but can't find any information on them. Please does anyone know of any websites that would have things like their history, development, applications in ancient times, origins, etc. Please help. Urgent!!!!
March 9, 2007 by kate 316

High School Courses
How often do state colleges which are moderately competitive require trigonometry? Is trigonometry something like algebra that they expect you to have, or do they usually not care as long as you have the right number of math courses? Would it look better for me to take ...
March 31, 2009 by Evelyn

Trigonometry
Evaluate sin^-1(square route of 2over2) give the answer in radians. Please i really need this question. can you help me?
January 17, 2007 by Matt

Pre-Calculus/Trigonometry
Help please If, f(x)= 3/x+2 -√x-3, complete the following statement. Round your answer to the nearest hundredths place. F(7)= ?
September 9, 2014 by Haila

trigonometry
okay so i have this trigonometry problem were i HAVE to use logarithms. Now this is my work but can u help me solve it using logarithms. Find the area of the following triangles:(use logarithms) 1) c=426, A=45degrees 48' 36",and B=61degrees 2' 13"
February 20, 2011 by anon

geometry&trigonometry
given that 180A 270and tan A=3/7, what is the exact value of cos A? can someone please help ???i need to know how to solve it ! thanks!
October 24, 2007 by Pauline

trigonometry
can you please help me understand relations and functions. Like how to figure out if an equation is a function or not a funcion. for example: 1) 3x+2y=6, 2) x=y^2+2 and 3) y=square root of 1-x thank you
November 13, 2008 by y912f

Trigonometry
Find the area of a sector, given a central angle of 240 and a radius of 15 cm. Round your answer to the nearest tenth please.
January 12, 2011 by CJ

TRIGONOMETRY
Can someone please show me step by step how to calculate the modulus and the argument for these complex numbers? I have a trig final next week and I am trying to finish this study guide so I am prepared. Thank you so much! If you can, please show my how you get the answer so I...
May 17, 2013 by Kate

Pre-Calculus/Trigonometry
Help Me, Please Here is a table of values for y = f(x). x: 0, 5, 10, 15, 20, 25, 30, 35, 40 f(x): 5, 6, 7,8, 9, 10, 11, 12, 13 Mark the statements that are true. A. f(5) = 6 B. The domain for f(x) is the set {5, 6, 7, 8, 10, 11, 12, 13}. C. The range for f(x) is all real ...
September 9, 2014 by Anonymous

TRIGONOMETRY
1. (1-sinB)/(sinBcosB)= cscB-secB --that's really the given. please help.
December 14, 2008 by anjelica318

Trigonometry
Need help on interval notations, need more of a definition and understanding, please help!
August 20, 2009 by Stephanie

trigonometry
Can you please show me the steps: Derive the identity for sin 3x in terms of sin x.
February 24, 2011 by anon

Trigonometry
If sin A = 3/5 and cos B = 24/25 and <A and <B are both in quadrant 1, what is the exact value of cos (A-B) ? Help please
March 23, 2013 by Maryanne

Trigonometry
Can you please help me solve this trig equation for 0 ≤ x ≤ 2π? 9sin^2(x)-6cos(x)-10=0 Thank you!
December 7, 2008 by Lucy X

Trigonometry
Solve for x to the nearest hundreth and can you explain how you get your answer I don't understand 3^x = 1.295 Your question has nothing to do with trigonometry. You can solve for x by taking the logarithm (to any base) of both sides of the equation. Then x log 3 = log 1.295 x...
June 10, 2007 by Linda

Math (trigonometry)
Trigonometry identities are so hard... I need some help proving these identities: *Oh, and I'm only in grade 11, so the identities we use are quotient identity and Pythagorean identity. sinx/(sinx + cosx) = tanx/(1 + tanx) cos^2x - sin^2x = 2cos^2x - 1 Thanks! Lucy
April 13, 2008 by Lucy

Trigonometry
A=30 degrees, a=9 and b=8. Find the missing sides/angles. I did cos39=x/8 and reduced that to 8cos39=x. I got 6.92. But that's not a valid answer, so I can't go from there. What did I do wrong? Can you show me how to get the other answers as well, please?
January 24, 2010 by Janie

trigonometry
please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.
March 17, 2011 by jen

trigonometry
please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.
March 17, 2011 by jen

trigonometry
please me to answer this question.because i will pass this coming monday march 21,2011.fin the diameter of three circle inscribed in a triangle. whose base is 50 cm.
March 17, 2011 by jen

Trigonometry
Solve cos 2x 3sin x cos 2x = 0 for the principal value(s) to two decimal places. Please explain.
August 3, 2012 by Cynthia

Trigonometry
√3 + 5cos⦸ = 3 cos⦸ Can someone please explain for me how to express the answer in radian measure? Thanks
October 4, 2012 by John

Trigonometry
rectangular form to polar form xy=12 rsinƟ rcosƟ=12 would the answer be: r^2=12/cosƟ sinƟ please show steps, Thanks
December 19, 2012 by Keith

Trigonometry/ Please Help
Given sine of alpha=2/3 and cosine of alpha is less than zero, find the exact value of the other five trigonometric functions.
January 13, 2011 by CJ

TRIGONOMETRY
I don't understand how to convert -3-4i to polar coordinates. I need to know how so I am ready for my trig final next year. Can someone please show me step by step how to solve this? Thanks
May 17, 2013 by Kate

Trigonometry
F(X) = 2x^3-5x^2-19x+1 / x^2-9....I need the vertical asymptote, horizontal asymptote and the slant asymptote...please help!
March 4, 2011 by Justin

Trigonometry
Prove that tan^2(alpha)-1+cos^2(alpha)sin^2(alpha) Please Explain
August 3, 2012 by Cynthia

Trigonometry
Three ships are situated as follows: A is 225 miles west of C while B, due south of C, bears S25*10'E from A. a. How far is B from A? b. How far is B from C? c. what is the bearing of A from B? PLEASE EXPLAIN
September 9, 2012 by Roy

TRIGONOMETRY
Because of the wind, a boat sails 4,728 meters in the direction S 47deg29mins W. How far south it goes? How far west has it gone? this is my report..please help me..i tried so hard but i really didn't get it..thanks!
August 6, 2010 by Winsel

maths
Trigonometry query. ABC is a rightangled triangle. AD is the bisector of angle BAC. Angle DAC = 15 degrees. X = CD. find X. I know the answer is 7.1 but cannot work out the theory. Could you please help? Thankyou.
May 5, 2011 by jane

maths (trigonometry)
please solve these if possible Q1. If sinx +siny=3(cosy-cosx) then the value of sin3x/sin3y. Q2. If sina ,cosa,and tan a are in g.p.then cos cubea+cos square a is equal to
June 6, 2011 by marley

Trigonometry
I need help proving the following identity: 4(sin^6(x)+cos^6(x)) = 4-3sin^2(2x) I am completely lost, if anybody can please give me a step-by-step guide to figuring this out, I would be forever grateful!!
June 26, 2011 by Rick

trigonometry
Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
November 12, 2009 by Sarah

trigonometry
Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
November 12, 2009 by Sarah

Trigonometry Help
Simplify: sin(x-y)cosy+cos(x-y)siny = (sinxcosy-cosxsiny)cosy+(cosxcosy+sinxsiny)siny = ??? What do I do next??? Please Help and Thank You
February 21, 2012 by Anonymous

Trigonometry
Write the quadratic function whose zeros are: 1. 2+square root of 5, 2-square root of 5 2. 3+7i,3-7i 3. 5i Please tell me how to get them. I have no clue on how to solve them.
August 27, 2014 by Glenn

trigonometry
Write the quadratic function whose zeros are: 1. 2+square root of 5, 2-square root of 5 2. 3+7i,3-7i 3. 5i Please tell me how to get them. I have no clue on how to solve them.
August 27, 2014 by james

Trigonometry
Prove that tan (Beta) sin (Beta) + cos (Beta) = sec (Beta) Please explain.
August 3, 2012 by Cynthia

Maths trigonometry
using basic trigonometry derive the following equations, which are used to convert cartesian to polar coordinates and vice versa. why is the cos(phi)in the x term? x = R cos (phi) sin (lamda) y = R sin (phi) they are used in orthogonal projection of a spherical surface to a ...
October 16, 2011 by forest

Intro to trigonometry
If sin(theta) < 0 and tan(theta) > 0 then: in degrees. Ok I need help with this I couldn't understand the lesson and want to know how to do problems like this. Please help me by showing me step by step! Thank u in advance.
November 20, 2013 by Lisa

trigonometry
okay so in my review packet under the "calculator" section it says law of sines and law of cosines. i dont know what that means. i wikipedia-ed it but i dont understand what they are saying. Please help!
January 22, 2009 by Spencer

Trigonometry/ Please Help
The average temperature, in F, of City B is given by the equation:y=19.5sin(pi/6t-2.06)+62 , where t is the time in months and t = 1 corresponds to January. What is the average temperature in April? Round your answer to the nearest hundredth.
January 13, 2011 by CJ

trigonometry, check please
A 12 ft. ladder makes a 33o angle with the side of a house. To the nearest tenth of a foot how high up on the house does the ladder come? I set it up 12xcos33 giving me 10.0
June 1, 2014 by Anonymous

Maths- Trigonometry
4. A,B and C are points on a horizontal plane. A is 75 m from C on a bearing of 210 degrees and the bearing of B from C is 120 degrees. The bearing of B from A is 075 degrees. From A the angle of elevation of the top T of a vertical towel at C is 42 degrees. Find a. the ...
March 3, 2012 by Jack

TRIGONOMETRY
Can someone please give me a step by step answer on how to find the complex cube roots of 8(cos(4π/5)+isin(4π/5))? I need to know how to do this for my trig final next week.
May 17, 2013 by Kate

Trigonometry
Given that sin alpha = 15/17 and -360 <alpha<360 find all values of alpha to two decimal places. Help Please!
May 18, 2013 by Ella

Trigonometry
"Sketch the graph of y=tan(x/2) By solving the equation x/2=-pi/2 x=- pi and the equation x/2=pi/2 x=pi..." Before I go any further, I need to understand where these equations came from. Where does the pi come from out of thin air? What becomes of the tangent? Can you please ...
January 24, 2010 by Ellyn

Trigonometry
``(please show the steps to how the problems were solved) Using exact values, find the value of: A.12sin 30 degree - 6 tan 45 degree + sec 45 degrees/ 52 B.Sin2A + tan3A/2 - cos A + sec(a+ 15), when A=30degrees
January 6, 2011 by Anon

Trigonometry One Quick Question! Please help!
Triangle ABC has side lengths 7, 24, and 25. Do the side lengths form a Pythagorean triple? Explain. Thank You so much! :) I'm having a hard time understanding this so it means alot!
February 20, 2012 by Amaya

Trigonometry Multiple Choice Question please help!
Viola drives 200 meters up a hill that makes an angle of 9 with the horizontal. To the nearest tenth of a meter, what horizontal distance has she covered? 1,262.8 m 200.4 m 197.5 m 31.3 m Thank you so much! ^_^
February 28, 2012 by LeXi ;)

Trigonometry
Find the counterexample to shows that the equation sec (alpha) - cos (alpha) = sin (alpha) sec (alpha) is not an identity. Please explain.
August 3, 2012 by Cyndy

Trigonometry
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? A. 14 nm B. 17.75 nm C. 21.5 nm D. 22.6 nm PLEASE HELP!
February 5, 2014 by John

Trigonometry
Solve the following trig equations. Give all positive values of the angle between 0 degrees and 360 degrees that will satisfy each. Give any approximate value to the nearest minute only. 3 sin - 4 cos = 2 Can you please help me with this one.
March 3, 2011 by anon

TRIGONOMETRY
3. The rectangular coordinates of a point are given. Find the polar coordinates of each point. b. (0,3) I figured out a, but I canNOT figure out b. Can someone please explain? :)I need to know how to do this for my final next week.
May 16, 2013 by Kate

trigonometry
can you explain to me in details please of how these type of questions can be answered without using a calculator to find the direct answer. Find the following functions correct to five decimal places: a. sin 22degrees 43' b. cos 44degrees 56' C. sin 79degrees 23'30'
January 13, 2011 by anon

Trigonometry (Math)
From the top of a building 70 ft. high, two objects in a straight line from the building are observed at angles of depression of 28 and 416' respectively. Find the distance between the two objects. -Complete Solution please. :'(
February 7, 2012 by Alianne

Trigonometry
Points A and B 1000 meter apart are plotted on a straight highway running east and west. from A, the bearing of tower C is N32*W and from be, the bearing of C is N64*E. approximate the shortest distance of the tower from the highway. please explain........
September 9, 2012 by Roy

trigonometry ?
A cottage under construction is to be 15.6m wide. The two sides of the roof are to be supported by equal rafters that meet at a 52 degree angle. Determine the length of the rafters to the nearest cm using a) the cosine law b) the sine law I am not understanding this question ...
March 16, 2010 by deborah

trigonometry
Using exact values,find the value of: (A=30degrees) sin 2A + tan 3A/2 - cos A + sec(A+15), when A= 30degrees There were no parentheses and no exponents. please help by showing the work in details. Thank you! I pluged in the numbers and got this I dont know if its right or ...
January 10, 2011 by alex

trigonometry
Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=3228'30" Also Give checks. I know the use of logarithms is unnecessary but i have to show my solution by using logarithms and thats the only reason I'm asking for help. ...
February 24, 2011 by Anon

trigonometry
if cosθ=2/3 and tanθ<0 find the exact value sin(θ-5π/3) sin2θ cos2θ cos(θ/2) can some1 please help me?
November 20, 2011 by Yulieth

Trigonometry
Could someone please help me with the following q's I'm having some trouble: 1.) cot θ (theta) = 0.791, find sec θ and tan θ 2.) tan θ = 9/40, what is the value sin^2θ + cos^2θ
November 26, 2013 by Kevin

Trigonometry - finding cos 36 given cos 72?
Please help, I know cos 72 degrees = (sqrt 5 - 1)/4. I need to know what cos 36 degrees is. How to do so?
March 18, 2013 by Knights

One Trigonometry Question Please Help!
Quilt squares are cut on the diagonal to form triangular quilt pieces. The hypotenuse of the resulting triangles is 18 inches long. What is the side length of each piece? 9 inches 93 inches 182 inches 92 inches Thank You I Really Appeciate it! :)
February 28, 2012 by Amaya

trigonometry
I need help in understanding how to identify which identity to use. using this question as an example. Show that tan theta (sin theta+cot theta cos theata)all over cos theta = sec^2 theta. Please explain.
May 4, 2012 by lindsay

Trigonometry
Express each of the following as a single logarithmic expression. All exponents must be left in radical form: 1.) 2logx-3logy 2.) logx-logy+logz 3.) 1/3log5x+2/3log6x 4.) 2/3(logbase2 x - logbase2 y) I dont understand these problems at all. Can someone please solve and explain...
May 19, 2012 by Nabil

Trigonometry
Could someone please help me out with this? I've read my text book, but can't seem to figure it out. And could you please show me how to do them? The Earth travels in a circular orbit around the Sun at 29.79 km/sec. If the radius of the orbit is 1.496 x 10^8 km, what is the ...
June 4, 2013 by Hannah

Trigonometry (Math)
From a point 5m. above the water surface, the angle of elevation of the top of a certain tree is 4010' while the angle of depression to the foot of the tree is 6320'. Find the height of the tree and the distance from the point of observation. -Complete Solution Please. Thanks:)
September 22, 2014 by choleng13

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
June 2, 2014 by Anonymous

Trigonometry:Angles of Elevation and Depression
Due to a storm, a pilot flying at an altitude of 528 feet has to land early. If he has a horizontal distance of 2000 feet to land, at what angle of depression should he land? Please show your work. Thanks in advance.
May 1, 2011 by A.J

maths - trigonometry
I have my maths exam on Tuesday and cannot remember how to do trigonometric identities at all. I was so sure, but now I'm not. I asked a similar question earlier, but I still don't quite understand. Please give me step-by-step instructions? [sinx + tanx] / [cosx +1] = tanx
June 18, 2010 by anonymous

College Algebra and Trigonometry
A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches...
April 30, 2014 by Madlyn Roberts

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