Number of results: 224,924
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
Math(trig)
I need more INFO.
Wednesday, July 21, 2010 at 2:53pm by Henry
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 ...
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
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
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
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
Trig
please help more
Thursday, January 14, 2010 at 10:12pm by Christian
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'...
Thursday, September 13, 2012 at 12:14am by Reiny
Trig
You have to be more specific.
Tuesday, September 15, 2009 at 8:05pm by bobpursley
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
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 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
trigonometry
amazing. I didn't think anyone did spherical trig any more.
Friday, October 12, 2012 at 4:52am by Steve
trig
Much more fun to do it the hard way
Monday, March 26, 2012 at 11:20am by Damon
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
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
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
3rd grade
Plural Positive = More than 1 (there's an 's' at the end) elephant trunks
Thursday, November 13, 2008 at 9:31pm by Trig
trig
Do it the way Dr WLS did it, much simpler and more likely correct.
Sunday, January 29, 2012 at 9:31am by Damon
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
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
first of all, this is not trig, secondly your expression makes no sense.
Monday, January 7, 2013 at 10:03pm by Reiny
Trig
Find (if possible) the trig function of the quadrant angle.
Monday, June 6, 2011 at 3:59pm by Master chief
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
simplify to a constant or basic trig function.. 1+tan(x)/1+cot(x)
Sunday, March 14, 2010 at 1:14pm by hilde
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
Find all of the solutions between 0 and 2pi: 2sin(x)^2 = 2 + cos(x)
Thursday, November 13, 2008 at 9:16pm by Trig
Trig
csc thea= -2, quadrant 4. what are the six trig functions?
Monday, May 6, 2013 at 4:17pm by Shay
TRIG
Find one numerical value for cot x/cos x = 5
Monday, November 12, 2012 at 7:31am by TRIG HELP
trig
I figured out that tan(theta)=-1 is 3pi/4+n(pi)
Thursday, March 22, 2012 at 12:28pm by TRig
Trig
Solve the following trig equation 2cos(x-π/6)=1
Tuesday, January 31, 2012 at 2:51am by Matt
trig
any calculus text will list the trig functions and their derivatives.
Thursday, January 19, 2012 at 8:45am by Steve
trig
write a product of two trig functions that equals 1.
Sunday, November 6, 2011 at 9:38pm by Dani
trig
what is the exact value of 7pi for all trig func.?
Monday, February 1, 2010 at 10:23pm by claire
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
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
find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3
Wednesday, September 14, 2011 at 10:38pm by karen
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
express the trig. ratios sinA,secA n tanA in terms of cotA.
Saturday, May 7, 2011 at 5:49am by Anonymous
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
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
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
TRIG Identities, Gr. 12: Prove: cot4x=1-tan^2x/2tan2x
Thursday, May 23, 2013 at 2:56pm by Josh
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
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
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 (if possible) the trig function of the quadrant angle. sec 3pi/2
Monday, June 6, 2011 at 4:00pm by Master chief
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
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 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
write 2+2 squareroot of 3i in trig form.
Thursday, May 17, 2012 at 5:01pm by ky
trig
what's the single trig. function of cos6xcosx-sin6xsinx
Thursday, May 17, 2012 at 4:44pm by MIK
Trig
Trig Identity. 1-sin^2x/1-cosx
Sunday, May 15, 2011 at 5:56pm by Jill
trig
how to i find the six trig values for (7pi/3)
Tuesday, January 12, 2010 at 9:50pm by Rak
trig
What is the range of the trig function sin(-3x+3)?
Monday, April 21, 2008 at 12:35am by Chaitanya
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
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
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
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
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
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
Trig
Not trig Since it is already factored ..... x = ± 5, or x = -2
Friday, January 18, 2013 at 11:39am by Reiny
TRIG
(cotx + cscx(1-cosx)= SIN x
Monday, November 12, 2012 at 7:33am by TRIG HELP
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...
Saturday, January 7, 2012 at 2:15am by Steve
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
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
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
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
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
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
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
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
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
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-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
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
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
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
btw, why are you calling this "trig" ?
Friday, November 14, 2008 at 11:25am 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 ...
Sunday, March 14, 2010 at 1:25pm by hilde
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
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
trig
(2x+1)(9x-3) one more step (2x+1)(3)(3x-1)
Sunday, September 11, 2011 at 6:52pm by Damon
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
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
precalc
Suppose that z1=6-8i. Find: A. The Trig Form of the complex number z1, where your theta is in degrees. B. The Trig form of z1*z2, where z2=5[cos(60degrees)+isin(60degrees)] C. The Trig Form of (z1)^4
Monday, December 5, 2011 at 1:34pm by Joshua
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
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
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
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
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
Math - Trig
Hi I have a Trig question that i dont understand, can someone please explain how to solve for it using cosine law?? A Clock with a radius of 15 cm has an 11 cm minute hand and a 7 cm hour hand. How far apart, to the nearest centimetre, are the tips of the hands at each time? a...
Wednesday, April 30, 2008 at 10:39am by Mark
MATH: Pre-Cal/Trig
The length of a rectangular flower garden is 6 more feet than its width. A walkway 3 feet wide surrounds the outside of the garden. The total area of the walkway itself is 288 square feet. Find the dimensions of the garden.
Saturday, January 29, 2011 at 5:20pm by Melody
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