Monday

April 21, 2014

April 21, 2014

Number of results: 257,986

**Math(trig)**

I need more INFO.
*Wednesday, July 21, 2010 at 2:53pm by Henry*

**Math - Trig**

Still don't get it, so yes need more help.
*Thursday, October 10, 2013 at 12:46am by Lilly*

**Math - Solving Trig Equations**

Start by recalling the most important identity. My math teacher calls this "the #1 Identity." sin^2(x) + cos^2(x) = 1 We want to simplify our trig equation by writing everything in terms of sine. Let's solve the #1 Identity for cos^2(x) because we have that in our trig ...
*Wednesday, November 21, 2007 at 6:29pm by Michael*

**11th grade math algebra 2 trig**

Answered below. Let me know if I need to explain anything more.
*Thursday, October 9, 2008 at 11:03pm by DrBob222*

**math**

I figured it out before I got your answer, and I used the trig identity sin(t-u)=sin(t)cos(u)-cos(t)sin(u). I ended up having to use four or five more trig substitutions before finally getting to the answer you have there. Your substitution is much easier to compute. Too bad I...
*Thursday, December 3, 2009 at 2:38pm by chuck*

**11th grade math algebra 2 trig**

the tens digit of a two digit number is 6 more than the units digit. the number is 36 more than the number when the digits are reversed/ what is the number?
*Thursday, October 9, 2008 at 9:37pm by Nick*

**graphing trig functions**

You can pick as many x points as you want. The more you plot, the easier it is to plot a smopoth and accurate curve. For the y values that go with each x, you need a calculator, a special slide rule or a table of trig functions. Hardly anyone uses tables or slide rules anymore.
*Friday, May 18, 2012 at 12:31am by drwls*

**math**

could someone please refresh my memory of the basic trig functions? ex) cos^2 + sin^2 = 1? That is a trig identity. http://www.sosmath.com/trig/Trig5/trig5/trig5.html
*Thursday, April 12, 2007 at 10:18pm by raychael*

**Trig.**

(s^2/c^2)(1/s) - s^2/c^2 (s^2/c^2) [ 1/s -1 ] (s^2/c^2)(1-s)/s (s/c^2)(1-s) I do not know what more can be done.
*Sunday, January 10, 2010 at 6:17pm by Damon*

**How to get quick responses to your math questions**

Math is a wide subject, ranging from K to 11, college and university. Then there is algebra, trigonometry, geometry, arithmetic, calculus, number theory, ... etc. Not all teachers answer all math questions (many do). If you would give a little more detail on which branch of ...
*Saturday, May 25, 2013 at 9:45am by MathMate*

**Trig**

please help more
*Thursday, January 14, 2010 at 10:12pm by Christian*

**Trig**

You have to be more specific.
*Tuesday, September 15, 2009 at 8:05pm by bobpursley*

**trig**

Trig? This is 7th grade math. 17(6/15 -8/17) surely you can combine the two fractions getting a common denominator.
*Friday, July 16, 2010 at 9:50am by bobpursley*

**math**

first of all, to make things easier to type, let's say h = delta x so your question becomes lim [ sin(π/6 + h) - sin π/6 ]/h , as h ---> 0 This looks like you want the derivative of sin x, when x = π/6 if f(x) = sinx f'(x) = cosx f'(π/6) = cos π/6...
*Thursday, September 13, 2012 at 12:14am by Reiny*

**Math - Trig - Double Angles**

Ugh...nevermind I'm so confused... If I did the right side, would it be more easy than the left side? I don't think I know how to expand with identities...
*Saturday, November 17, 2007 at 6:17pm by Anonymous*

**Trig**

they are all correct but I would write tanß = 4/5 also you have no angle after your trig names to say sin = 4/5 is a sin. (math joke)
*Thursday, March 6, 2008 at 3:30pm by Reiny*

**trig**

Much more fun to do it the hard way
*Monday, March 26, 2012 at 11:20am by Damon*

**trigonometry**

amazing. I didn't think anyone did spherical trig any more.
*Friday, October 12, 2012 at 4:52am by Steve*

**Trig 30**

x/2 = 2pi/3 yields a unique solution of x = 4pi/3 Does this answer come from some trig equation? Your subject title suggests that. In that case find the period of the trig function, then add k(period) to 4pi/3, k an integer.
*Friday, March 19, 2010 at 7:59pm by Reiny*

**Math - Trig**

Looks like you need to review the basic trig functions and draw useful diagrams. #1 h/15 = tan 46.48° #2 h/17.2 = tan 73.5°
*Wednesday, December 4, 2013 at 12:11am by Steve*

**Trig**

They aren't explained in a way that I can understand them. Can you explain more clearly?
*Tuesday, October 16, 2012 at 6:14pm by Nikki*

**mAth**

surely your class materials include graphs of the six trig functions . . . besides, we can't post pictures here. do a web search on secant trig function and you will find many pictures of the graph
*Monday, January 23, 2012 at 10:17am by Steve*

**Math- gr.12 Trig. **

Hi, could someone explain to me how to use a counterexample in trig to prove whether something is either an identity or equation? For ex. how would you do that with this question? sec^2x-tan^2x= cos x
*Monday, January 11, 2010 at 7:15pm by May*

**More trig**

1) is not an equation 2) cosx= (4+-sqrt(16-4*(4)(-1))/8= you do it check my thinking.
*Monday, November 17, 2008 at 11:30pm by bobpursley*

**maths trig**

yeah one more mistake from my part it is to prove tan(p+q)=...
*Saturday, August 14, 2010 at 11:39am by arti*

**trig**

Do it the way Dr WLS did it, much simpler and more likely correct.
*Sunday, January 29, 2012 at 9:31am by Damon*

**trig**

Subtract 2 pi from 7pi/3. The trig functions of 7 pi/3 will be the same values as the trig functions of pi/3, which is 60 degrees. The cosine of pi/3 is 1/2. That makes the secant 3. The tangent is sqrt3 You should be able to look up or figure out the other funtions of that ...
*Tuesday, January 12, 2010 at 9:50pm by drwls*

**Math trig **

Look at your trig functions d/24 = cos 25° height H/24 = sin 25° for the 2nd part, (d+2)^2 + h^2 = 24^2 ladder slid down H-h feet
*Saturday, October 22, 2011 at 2:13pm by Steve*

**trig**

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?
*Monday, April 21, 2008 at 8:53pm by Priya*

**trig**

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?
*Tuesday, April 22, 2008 at 12:03am by Chaitanya*

**trig**

how do i do this? give the signs of the six trig functions for each angle: 74 degrees?
*Wednesday, December 3, 2008 at 6:59pm by Tay*

**trig**

express the trig. ratios sinA,secA n tanA in terms of cotA.
*Saturday, May 7, 2011 at 5:49am by Anonymous*

**trig**

How do you solve cos(2arcsin 1/4) using inverse trig. functions??!! PLEASE HELP ME!
*Monday, May 9, 2011 at 11:20am by Tor*

**Trig**

Find (if possible) the trig function of the quadrant angle. sec 3pi/2
*Monday, June 6, 2011 at 4:00pm by Master chief*

**trig**

find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3
*Wednesday, September 14, 2011 at 10:38pm by karen*

**graphing trig functions**

I see the equation of a straight line, not a trig function
*Sunday, May 20, 2012 at 10:15pm by Reiny*

**Trig**

surely you have learned the basic definitions of the trig functions, tanØ = y/x = 4/3
*Sunday, January 20, 2013 at 5:17pm by Reiny*

**trig**

its in the first chapter of my trig course. i know its review frm geometry and alg
*Friday, November 14, 2008 at 11:25am by y912f*

**trig**

simplify to a constant or basic trig function.. 1+tan(x)/1+cot(x)
*Sunday, March 14, 2010 at 1:14pm by hilde*

**Trig**

This subject is not trig. You will have to use your own graphic calculator.
*Sunday, May 15, 2011 at 12:10am by drwls*

**trig**

first of all, this is not trig, secondly your expression makes no sense.
*Monday, January 7, 2013 at 10:03pm by Reiny*

**trig**

What kind of reflections are the following trig functions? y = 3cos(x-1) y = sin(-3x+3) y = -2sin(x)-4
*Sunday, April 20, 2008 at 10:27pm by Joshua*

**trig**

What kind of reflections are the following trig functions? y = 3cos(x-1) y = sin(-3x+3) y = -2sin(x)-4
*Monday, April 21, 2008 at 12:33am by Joshua*

**trig**

What is the shift along x of the following trig functions? y = (3sinx/2) + 4 y = -2sin(x)-4 y = sin(-3x + 3)
*Monday, April 21, 2008 at 12:34am by Amandeep*

**Precalculus**

How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?
*Saturday, August 6, 2011 at 5:39pm by Jess*

**Trig**

find the exact values of the six trig functions of angle... sin(-315degrees) how do i do this?
*Thursday, September 1, 2011 at 9:16pm by ALISON*

**trig**

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x)= secx i(x)= cscx
*Thursday, January 19, 2012 at 8:45am by Claire*

**trig**

TRIG Identities, Gr. 12: Prove: cot4x=1-tan^2x/2tan2x
*Thursday, May 23, 2013 at 2:56pm by Josh*

**Trig**

Does anybody know a good website that will hlp me with finding the six trig functions of a point NOT on the unit cricle?
*Wednesday, September 16, 2009 at 7:59pm by Anonymous*

**trig**

use the unit circle to find the exact value for all the trig functions of è=2ð/3.
*Monday, February 1, 2010 at 9:54pm by Anonymous*

**trig**

find the 5 other trig functions if cos(theta) = square root of 2/2 and cotangent is less than 0
*Wednesday, June 9, 2010 at 7:04pm by kelly*

**trig**

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x0= secx i(x)= cscx
*Thursday, January 19, 2012 at 8:45am by Claire*

**trig! please help!**

to bobpursely: i need to simplify the expression using trig identities. and no i meant for there to only be x
*Sunday, May 13, 2012 at 8:59pm by Brianna*

**Physics (trig)**

If the angle is x, tan x = 12.3333/19.2 Better review your trig ratios...
*Wednesday, June 19, 2013 at 9:10pm by Steve*

**trig**

what is the exact value of 7pi for all trig func.?
*Monday, February 1, 2010 at 10:23pm by claire*

**Trig**

Find (if possible) the trig function of the quadrant angle.
*Monday, June 6, 2011 at 3:59pm by Master chief*

**trig**

write a product of two trig functions that equals 1.
*Sunday, November 6, 2011 at 9:38pm by Dani*

**trig**

any calculus text will list the trig functions and their derivatives.
*Thursday, January 19, 2012 at 8:45am by Steve*

**Trig**

Solve the following trig equation 2cos(x-π/6)=1
*Tuesday, January 31, 2012 at 2:51am by Matt*

**Trig **

csc thea= -2, quadrant 4. what are the six trig functions?
*Monday, May 6, 2013 at 4:17pm by Shay*

**Math (Trig)**

I don't think your equation is an identity, I tried several angles and the Left Side is not equal to the Right Side. Check your typing. In general, I try to prove these type of identities by changing everything to sines and cosines, unless I can recognize one of the common ...
*Wednesday, April 9, 2008 at 2:06pm by Reiny*

**trig**

Do you mean find the six trig functions (sin, cos, tan, csc, sec, and cot)?
*Wednesday, December 3, 2008 at 6:59pm by Anonymous1*

**maths trig**

The more I study your question, it is fraught with errors. Are you certain you are not proving Tan(P+Q)= 2ac/(a^2-c^2) That is rather straightforward.
*Saturday, August 14, 2010 at 11:39am by bobpursley*

**trig**

Each? I only see one identity. You need to use more parentheses or brackets to clarify what the numerator and denominator are.
*Friday, June 24, 2011 at 11:01am by drwls*

**trig**

don't have a calculator? If you want to express it in terms of some particular angle, you gotta specify things a it more tightly.
*Saturday, April 27, 2013 at 1:49pm by Steve*

**trigonometry**

what do you mean by "three degrees of a 90 degree angle"? Angles don't have bases. I'm confused. Maybe someone more expert than I can attach some mathematical meaning to the question. Or, you could fill a few more details, like maybe it's a triangle, with side, angle, etc. It ...
*Saturday, January 7, 2012 at 2:15am by Steve*

**trig**

Let Q be an acute angle such that sinQ=.6. Find the values of the following using Trig Identities: cosQ and tanQ
*Tuesday, July 27, 2010 at 10:06pm by student*

**Trig**

Use Trig identities to verify that sec^4(x)-tan^4(x)=1+2tan^2(x), Only work with one side of the equation
*Tuesday, March 1, 2011 at 5:23pm by Anonymus*

**trig**

Just noticed this was for trig, not calculus. Algebraically, note that a(y) is a parabola, whose vertex occurs where y=60/4 = 15.
*Thursday, August 29, 2013 at 9:44pm by Steve*

**trig**

What is the range of the trig function sin(-3x+3)?
*Monday, April 21, 2008 at 12:35am by Chaitanya*

**Trig**

please show me again in trig way
*Saturday, May 17, 2008 at 12:40pm by Doni --i didnt get this one can please show me the trig way a little bit more clrealy*

**trig**

how to i find the six trig values for (7pi/3)
*Tuesday, January 12, 2010 at 9:50pm by Rak*

**Trig**

Trig Identity. 1-sin^2x/1-cosx
*Sunday, May 15, 2011 at 5:56pm by Jill*

**trig**

what's the single trig. function of cos6xcosx-sin6xsinx
*Thursday, May 17, 2012 at 4:44pm by MIK*

**trig**

write 2+2 squareroot of 3i in trig form.
*Thursday, May 17, 2012 at 5:01pm by ky*

**trig**

no idea what "p" and "o" represent, or which trig function is required.
*Monday, July 22, 2013 at 8:09pm by Reiny*

**trig**

You have to state where the right angle is. Once that is established, this looks like a very fundamental and basic trig question.
*Wednesday, April 16, 2008 at 10:54pm by Reiny*

**trig**

What is the shift along x of the trig function y = cos(4x/3 minus 1)? Any link of proof would be appreciated if you have one Thank you
*Monday, April 21, 2008 at 8:51pm by Priya*

**trig**

What is the shift along y of the trig function y = cos(4x/3 minus 1)? Any link of proof would be appreciated if you have one Thank you
*Monday, April 21, 2008 at 8:52pm by Priya*

**trig**

Suppose that q is in standard position and the given point is on the terminal side of q. Give the exact value of the indicated trig function for q.
*Monday, February 21, 2011 at 11:50am by Anonymous*

**Pre Calculus/Trig**

I've tried that multiple times, but I was told the answer should be more than one. I get something around .07
*Thursday, October 11, 2007 at 9:04pm by Nick*

**trig-need more information**

1. Is the rocket launch-pad midway between the two telescopes? 2. What are the observed angles of elevation?
*Thursday, April 14, 2011 at 6:08pm by MathMate*

**Precalc/Trig Word Problem**

Greg ! Enough of "homework - dumping" Show some work before any more help is given.
*Monday, October 8, 2012 at 9:12am by Reiny*

**Trig**

Did you notice that trig co-functions come in pairs: sine ---cosine secant --- cosecant tangent --- cotangent so csc(4π/11) = ......
*Wednesday, May 11, 2011 at 4:53am by Reiny*

**Trig**

looks like "homework dumping" to me I have two of them for you. Please indicate where you are having difficulties with these standard type of trig questions.
*Tuesday, September 17, 2013 at 11:24pm by Reiny*

**Trig**

The next two steps in solving this trig identity question are ??? 1/csctheta x costheta x sintheta x sectheta = sinsqtheta arghhh need help please
*Saturday, December 17, 2011 at 7:43pm by Don*

**Trig**

Not trig Since it is already factored ..... x = ± 5, or x = -2
*Friday, January 18, 2013 at 11:39am by Reiny*

**trig 26**

simplify to a constant or trig func. 1. sec ²u-tan ²u/cos ²v+sin ²v change expression to only sines and cosines. then to a basic trig function. 2. sin(theta) - tan(theta)*cos(theta)+ cos(pi/2 - theta) 3. (sec y - tan y)(sec y + tan y)/ sec y combine fractions and simplify to a...
*Sunday, March 14, 2010 at 1:25pm by hilde*

**Math**

Just cross-multiply to clear the fractions. You get cos*cos = (1-sin)(1+sin) If that doesn't look true, you do need to work some more of these. Dozens of them. sin^2 + cos^2 = 1 is one of the most useful identities you have for trig problems.
*Saturday, February 23, 2013 at 7:03pm by Steve*

**geometry**

first off, trig functions are just numbers. they have no units (such as meters). Maybe those little m's are meant to be ° symbols. If sin(x) = 8/32, x = 14.48° did you visit the trig site I provided? http://www.rapidtables.com/calc/math
*Friday, February 15, 2013 at 3:57pm by Steve*

**trig**

cos^2 x= cosX * CosX Surely you are looking for something more complex than that.
*Wednesday, December 16, 2009 at 9:46pm by bobpursley*

**trig**

(2x+1)(9x-3) one more step (2x+1)(3)(3x-1)
*Sunday, September 11, 2011 at 6:52pm by Damon*

**trig**

Getting ready for trig semester finals. Can't figure out how they are simplifying these equations. (these are the review not actual test) tanx-sqr3=2tanx and 2sin^2+sinx=0
*Sunday, December 11, 2011 at 4:49pm by Josh*

**trig**

forgot to mention that you cannot just skip the "angle" after a trig operator. What you typed would be like having an equation of the type ... √ = ∫ + ∑
*Friday, January 24, 2014 at 8:46pm by Reiny*

**trig**

Use substitution to determine whether the given x-value is a solution of the equation: sin x = -2sqrt3/3, x=4pi/3 A) Yes B) No C) More information is needed D) The problem is indeterminate
*Thursday, December 17, 2009 at 9:35pm by Steve*

**trig**

Use substitution to determine whether the given x-value is a solution of the equation: sinx = -3sqrt/2, x=4pi/3 A) Yes B) No C) More information is needed D) The problem is indeterminate
*Thursday, December 17, 2009 at 9:39pm by Steve*

**Math/Trig**

How would I evaluate these trig functions without using a calculator? U: sin(-13π/6) cot 11π/6 cot(-14π/4) sec 23π/6 Thanks in advance ^^; and if you'd tell me step by step on how to do problems like these I'd be grateful :D
*Monday, June 11, 2012 at 5:03am by Leah*

**Physics**

2. you know the dispersion angle. YOu will have to use trig to find width at trig bottom. Draw the figure, label the paths, and I assume you know how thick the glass is. 3. Same principle as 2.
*Friday, January 22, 2010 at 6:56pm by bobpursley*

**Trig**

Nope. As usual, there is more than one way to do it. I picked my way to avoid actually having to find the value of x.
*Tuesday, April 16, 2013 at 5:06pm by Steve*

**function and trig.**

Since you have not written an equation, there is nothing to solve. Is the "-" before the 16 supposed to be an =" ? You also need to use more parentheses (or brackets)to clarify if 3/x+4 is 3/(x+4) or (3/x) + 4
*Thursday, January 15, 2009 at 2:06pm by drwls*

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