Tuesday

February 21, 2017
Number of results: 60,086

**Trigonometry**

PLEASE HELP!! I really don't understand this...I just started learning about trigonometry and SOH CAH TOA and I think this probably has to do with that but I don't know how to apply it... Please explain this to me!!!! I need to know how to do it and not just the answer. ...

*March 30, 2016 by Becca*

**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*

**MATHS 2**

If x+y=45°, prove that {(cotx+1)(coty+1)}/{cotx×coty}=2 Please help me in this TRIGONOMETRY problem. From the topic - TRIGONOMETRY Ratios of compound angles

*October 26, 2016 by A GOODSTUDENT*

**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**

25. simplify: sin^2 ø/1- cos ø please help? thank you!

*May 20, 2016 by emily*

**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**

Write an algebraic expression for y=tan (cos^-1 x/3)for 0<x<3. Please Help!!

*November 26, 2016 by Asia Muhammad*

**TRIGONOMETRY**

1. (1-sin²B)/(sin²Bcos²B)= csc²B-sec²B --that's really the given. please help.

*December 14, 2008 by anjelica318*

**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*

**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**

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*

**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/ Please Help**

Find two exact values of sin(cosˉ¹√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**

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 don't 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*

**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**

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*

**Trigonometry**

a 20ft. ladder is leaning against a wall so that the foot of the ladder is 9ft. from the buss of the wall what angle does the ladder make with the ground? what is the distance from the top of the ladder to the base of the house? based in trigonometry

*November 21, 2015 by Ara Jane*

**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*

**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*

**trig, precalc, math, algebra, trigonometry**

Rewrite: tan(cos^−1 (v)) as an algebraic expression in v. Please help me understand.

*May 5, 2016 by Veronica*

**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**

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 180¡ã¡ÜA¡Ü 270¡ãand 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*

**Math**

What is the area of a rhombus with: Side=8 cm Acute angle between one pair of sides=30 degrees Please don't use trigonometry as I'm in Class 7. Thanks in advance.

*February 13, 2017 by Aastha*

**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**

tanA - sin A /sin^2A= tan A / 1 + cosA Please prove this

*March 22, 2016 by Venkatesh*

**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**

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**

Law of Sines sigma=27 deg 30' c= 52.8 a=28.1 Please show two solutions (beta1, beta2,...) due to acute and obtuse angles. Thank you so much for helping!

*January 24, 2015 by Anonymous*

**College Algebra and Trigonometry**

if x = ucos(pi/4) - vsin(pi/4) and y = usin(pi/4) + vcos(pi/4), find A, B and C so that, 5x^2 - 6xy + 5y^2 = Au^2 + Buv + Cv^2. Thanks, I really don't know what to do, I've already used almost 20 sheets of paper. Please help me. Thanks.

*January 25, 2015 by Nicole*

**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*

**math- Trigonometry**

If cos degree equals to 0.8641 What is Sin degree? I have no idea how to find this. Please help me. Thank you

*November 4, 2016 by Simran*

**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**

√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 rsinÆŸ rcosÆŸ=12 would the answer be: r^2=12/cosÆŸ sinÆŸ please show steps, Thanks

*December 19, 2012 by Keith*

**Trigonometry**

A tree is 5.8 metres tall and casts a shadow, the Suns elevation is 55 degrees, what length is the shadow? How do I work this out please?

*October 19, 2016 by Meika*

**Trigonometry**

A tree is 5.8 metres tall and casts a shadow, the Suns elevation is 55 degrees, what length is the shadow? How do I work this out please?

*October 20, 2016 by Meika*

**trigonometry**

y=−34 sin(10θ+10π)−14 I need to graph this trigonometry problem. I need the parent graph, period, vertical shift, phase shift, a separate graph showing the new mid line with the amplitude and a final product graph. thanks for any help :)

*November 18, 2015 by khloe*

**Trigonometry**

A balloon is flying west of two trigonometry students who are 7 miles apart. The angles of elevation of the two students to the balloon are 15 and 28 degrees. Approximate how high the balloon is flying.

*November 3, 2014 by Bailey*

**trigonometry**

okay so in my review packet under the "calculator" section it says law of sines and law of cosines. i don't know what that means. i wikipedia-ed it but i don't understand what they are saying. Please help!

*January 22, 2009 by Spencer*

**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*

**help with trigonometry??**

Jacob is standing 112 m from a building. The angle of elevation when he looks up to the top of the building is 62°. How tall is the building? I don't really understand how to solve this, please help!!

*January 24, 2017 by Valerie *

**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 Help please**

1.Explain the relationship(s) among angle measure in degrees, angle measure in radians, and arc length.

*February 20, 2016 by Ryan*

**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- ??????**

If vector a= (10,10) and vector b= (4,5) then ||a+b|| ≠ ||a|| + ||b||. Explain. I don't understand what this question is exactly asking, and I'm not sure how to answer it. Please explain. Thank you very much!!!

*December 18, 2015 by Elena*

**Trigonometry**

Evaluate please: a.) arcsin(sin 13pi/16) b.) arccos(cos[-pi/18]) c.) arcsin(sin pi/18 d.) arcsec(-√2) e.) arctan(-√3/3)

*November 26, 2016 by Liv*

**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. 5±i 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. 5±i Please tell me how to get them. I have no clue on how to solve them.

*August 27, 2014 by james*

**Trigonometry**

Can you please help me verify these? >sin7x-sin5x= tanx(cos7x-cos5x) >(1-cosx)cot(1/2x) = sinx >1+tanx tan(x/2) = secx Its very confusing because of all the double-half angle formulas >_<

*February 3, 2015 by Karla*

**Trigonometry**

Prove that tan (Beta) sin (Beta) + cos (Beta) = sec (Beta) Please explain.

*August 3, 2012 by Cynthia*

**math**

PLEASE HELP ME WITH THIS TRIGONOMETRY QUESTION!!? Edit Express each of the following in terms of another angle between 0 degrees and 180 degrees a. sin 50 degrees b. sin 150 degrees c. cos 45 degrees d. cos 120 degrees Update: we have not yet learnt it in class i'm trying to ...

*September 2, 2016 by becky2000*

**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. Love the no help, now he thinks I'm stupid. My friend Nick is quizzing my on stuff I don't know. like this Given: A= 10km S30degreesW and B= 15km S40degreesW Find the resulting vector (magnitude and direction) of the combined vectors Please just help. He's 19 and I'm 14...

*December 7, 2016 by Alex*

**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*

**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*

**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*

**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**

Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43‹41Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What would you do to fix it?

*September 21, 2015 by April*