Search: Solving trig functions! urgent please help!

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Solving trig functions! urgent please help!
1.2sinxtanx + tanx-2sinx-1=0 2.6tan^2x-4sin^2x=1 Both functions is for 0<x<2pi thank you!
Tuesday, December 20, 2011 at 11:57pm by Sally

Solving trig functions! urgent please help!
6 (sin^2/cos^2) -4 sin^2 - 1 = 0 6 s^2 - 4 s^2c^2 - c^2 = 0 6 s^2 -4s^2(1-s^2) -(1-s^2) = 0 6s^2 -4s^2 +4s^4 +s^2 - 1 = 0 4 s^4 +3 s^2 -1 = 0 (4s^2-1)(s^2+1) = 0 sin^2x = 1/4 or sin^2x = -1 (imaginary root) sin x = +1/2 or sin x = -1/2 You can take it from there.
Tuesday, December 20, 2011 at 11:57pm by Damon

Solving trig functions! urgent please help!
2 sin^2x/cosx + sinx/cosx - 2 sinx - 1 = 0 2 sin^2x + sinx -2 sinxcosx - cosx = 0 2sinx(sinx-cosx) = -(sinx-cosx) sinx = -1/2 x = 210 degrees(7pi/6) or 330degrees(11pi/6)
Tuesday, December 20, 2011 at 11:57pm by Damon

trig
Solving Trig Functions: How Do You Solve For Sin 7.5 Using Half-Angle and Double-Angle Identities?
Wednesday, September 22, 2010 at 10:23pm by Spy[c]

Solving trig functions! urgent please help!
In #1, Damon lost 2 answers by just dropping the (sinx-cosx) from 2sinx(sinx-cosx) = -(sinx-cosx) 2sinx(sinx-cosx) + (sinx-cosx)= 0 (sinx-cosx)(2sinx + 1) = 0 sinx = -1/2 etc, (see above) or sinx - cosx = 0 sinx = cosx sinx/cosx =1 tanx = 1 x = 45° or 225° (π/...
Tuesday, December 20, 2011 at 11:57pm by Reiny

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
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
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

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

Trigonometry
Try reviewing your trig functions and post an attempt at some of these. We'll be happy to check your work. They're all pretty straightforward applications of the definitions of trig functions and Pythagorean Theorem.
Monday, March 5, 2012 at 1:06pm by Steve

graphing trig functions
for graphing basic trig functions such as y=2sinx or y=1/3cosx, how do you know what the points are to graph with out using a calculator?
Friday, May 18, 2012 at 12:31am by bkue

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

urgent urgent algebra
find the composite function fog f(X) = 1/X-5,g(x)-6/x question 2 find inverse, domain range and asymatotes of each function f(x)=3+e^4-x can some one help me please been stuck on these for 2 days need help solving thank you
Tuesday, March 19, 2013 at 11:44pm by zachary

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 grade 12 Advanced Functions
3. Using proper grammar 1 point 3. What is the value of x + y? (5 points) Rubrics: 1. Writing the correct equation(s) 1 point 2. Showing steps 1 point 3. Solving for x 1 point 4. Solving for y 1 point 5. Solving for x + y 1 point
Friday, January 25, 2013 at 11:42am by Anonymous

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 (inverse functions)
I found my mistake, please disregard.
Monday, April 21, 2008 at 3:16pm by Dennis

Trig
What are we doing? Solving ? or proving it is an identity? BTW, you have to put the x for all the trig functions that is, cosx cotx = cscx - sinx Let's see if it is an identity... LS = cosx (cosx/sinx = cos^2 x/sinx RS = 1/sinx - sinx = (1 - sin^2 x)/sin = cos^2 x/sinx = ...
Tuesday, December 4, 2012 at 11:27pm by Reiny

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

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

Physics
Calculus is a branch of mathematics that lets you solve equatiuns that involve the rate of change of functions, or the areas under curves. In the course of solving these equations, often many new functions are introduced.
Sunday, October 24, 2010 at 10:49pm by drwls

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
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
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
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
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

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
Let f and g be two invertible functions such that f^-1(x)=5/x+4 and g(x)=4(x-2). Find f(g(5)). Show your steps please so I can see how to do it. Thank you! :)
Friday, October 12, 2012 at 1:44am by Bailey

Pre-Calculus/Trivia
If x = sin(theta), these equations are identities, expressing other trig functions in terms of sin hey arise from the identity sin^2(theta) + cos^2(theta) = 1 As for real life and calculus, get familiar with the trig functions, and by the time you have mastered the techniques...
Monday, February 20, 2012 at 9:22pm by Steve

trig
The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s= 2 sin pi t + 3 cos pi t, where t is measured in seconds. (a) Find the average velocity during each time period: (i)[1,2] (ii) [1,1.1] (iii) [1, 1....
Tuesday, September 23, 2008 at 8:40pm by Sarah

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

sci 241
could any one PLEASE help me get started on this??? I DO NOT UNDERSTAND IT!!!!!!! any advicer or help PLEASE URGENT Write a 1,400- to 1,750-word paper in APA format outlining your healthy eating plan. Be sure to discuss: o Your current eating habits (as documented in the Food ...
Saturday, May 30, 2009 at 6:38pm by Brittney......URGENT PLEASE HELP

URGENT LANGUAGE ARTS
PLEASE THIS IS URGENT VERY URGENT BUT I NEED HELP
Monday, December 17, 2012 at 9:00pm by Gabby

trig
Given that sin x = - ã2/2 and that cos x is negative, find the other functions of x and the value of x. can you explain how this problem can be solved please.
Sunday, January 30, 2011 at 12:49am by Anonymous

Physics
he graph of the velocity of a mass attached to a horizontal spring on a horizontal frictionless surface as a function of time is shown below. The numerical value of V is 5.48 m/s, and the numerical value of t0 is 8.97 s. a) What is the amplitude of the motion in m? b) What is ...
Tuesday, November 20, 2012 at 11:47pm by Jalopy

Trig
Find values of all six trig functions if sin(theta)= 4/5 and theta is in the second quadrant.
Tuesday, August 23, 2011 at 2:47pm by Lucy

trig
find the exact values of the six trig functions of theta equals six pi divided by 8
Monday, October 17, 2011 at 9:01pm by don

Trig
Please explain inverse functions. i.e. find angle if Sin x = 2.3 divided by 8.15. Answer 16.30 degrees. How did they do that??? Tks
Thursday, December 4, 2008 at 3:50pm by John

TRIGONOMETRY
by test time you need to know the "standard" angles with easy-to-recall trig functions 0,π/6,π/4,π/3,π/2 If you know those angles and their trig ratios, you will recall that tan π/3 = √3 Now, recall the bit about...
Saturday, May 18, 2013 at 9:37am by Steve

MATH URGENT
a. Solve a – 9 = 20 b. Solve b – 9 > 20 c. How is solving the equation in (a) similar to solving the inequality in (b)? d. How are the solutions different? I dont know how to do this i forgot ... could u help (Steve, or Mrs.Sue, or Writeteacher plz help)
Friday, January 18, 2013 at 5:42pm by Gabby

trig
If cos 0 = - 1/2 and tan 0 > 0, find the quadrant that contains the terminal side of 0, and then find the exact values of the other five trig functions of 0.
Saturday, May 14, 2011 at 11:40am by shawn

algebra/trig
1.Find the domain f(x)=ã(x^(2)-9) 2. Find all six trig functions for (-3,4)
Wednesday, June 8, 2011 at 11:27pm by Mike

trig
how do i find six trig functions for cos(pi over 2-x)=3/5, cos x=4/5?
Tuesday, October 19, 2010 at 11:28pm by Anonymous

Trig
points do not have trig functions. Angles have trig functions. http://id.mind.net/~zona/mmts/trigonometryRealms/TrigFuncPointDef/TrigFuncPointDefinitions.html
Wednesday, September 16, 2009 at 7:59pm by bobpursley

Trig
URGENT, Please answer this question: give the value of: Tan(Arctan x+1/x-1+Arctan x-1/x)
Saturday, June 11, 2011 at 10:21am by Mike

Advance Functions
Solve: 12+4|6x−1|<4 5−6|x+7|less than or equal to 17 ...can you please explain to me.. i know that it's like solving algebraically but one of them has no solution..
Saturday, February 16, 2013 at 5:23pm by jc

pre calc
since you are asking about trig functions, it would be logical to assume that you can find the definitions. csc A = 1/sinA if that's difficult, please review your algebra I.
Thursday, January 12, 2012 at 8:02pm by Steve

trig
Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.
Sunday, May 8, 2011 at 12:35am by Nick

Quadratic Functions
I need help solving this equation: y=-2x^+3 And you do need to graph this equation so can someone please help me?
Monday, April 7, 2008 at 8:10pm by Megan

Math Trig
Find the values of the six trigonometric functions of an angle in standard position if the point with coordinates (12, 5) lies on its terminal side? Please explain how!
Tuesday, October 16, 2012 at 9:56am by Laytin

trig
yes, that is what I said. Cot 45 = 1/tan 45 = 1 I also did the other trig functions of 45 because I am sure you will need them.
Monday, May 19, 2008 at 6:32pm by Damon

Trig Help (URGENT)
Solve over the indicated interval: 2sin^2x=sqrt2sinx , [-180,180) don't how to get x by itself please help and thank you
Wednesday, February 22, 2012 at 10:25pm by Anonymous

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

GEOGRAPHY (URGENT!!!)
I NEED HELP!!! this is urgent!!! Human-Environmental Interactions: how did the people in Khartoum modify the environment? how is the people in khartoum being influence by the physical landscape/environment? sorry my grammar sucks i have other questions but i really extremely ...
Thursday, November 18, 2010 at 7:50pm by NEED HELP URGENT!!!

math(Please please help!!!)
Solving log functions 1) log x + log(x-6) = log 7
Saturday, February 6, 2010 at 8:53am by Hannah

spanish!!...urgent!...please help
how did the geography influence the migration and exploration of colombia? venezuela? i need websitres for this urgent...please help asap... :(
Thursday, December 6, 2007 at 6:58pm by maggie

trig
determine all trig functions of theta using the given info, state the answers correct to the nearest hundredth. cos (theta) = -5/13; tan (theta) < 0
Saturday, May 14, 2011 at 11:40am by anna

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

CALCULUS! PLEASE HELP URGENT!
Which of the following functions have a derivative at x=0? I. y= absolute value(x^3-3x^2) II y= square root(x^2+.01)- absolute value (x-1) III y= e^x/cosx
Thursday, October 8, 2009 at 5:54pm by Mark

GR.10 CIVICS!!!!!URGENT
CAN SOMOENE PLEASE GIVE ME A LINK TO A PICTURE THAT HAS TO DO WITH OR IS RELATED TO ABORIGINALS GAINING THE RIGHT TO VOTE IN CANADA(1960).PLEASE! ITS URGENT.THANKS
Saturday, May 30, 2009 at 6:56pm by LALA

Statistics
If Y1 is a continuous random variable with a uniform distribution of (0,1) And Y2 is a continuous random variable with a uniform distribution of (0,Y1) Find the joint distribution density function of the two variables. Obviously, we know the marginal density functions of each ...
Sunday, November 15, 2009 at 10:28pm by Sean

Calculus
We're learning about different kinds of functions and I don't really understand the difference between rational and algebraic functions. I know that rational functions are functions that are a ratio of two polynomials, and algebraic functions are any functions that can...
Thursday, September 13, 2007 at 11:09am by Kelly

Trigonometry
Use the trig Identities to find the other 5 trig functions. Problem 7.)Tan(90-x)=-3/8 8.)Csc x=-13/5 9.)Cot x=square root of 3 10.)Sin(90-x)=-.4563 11.)Sec(-x)=4 12.)Cos x=-.2351 I need HELP!
Tuesday, January 5, 2010 at 4:09pm by Jennifer

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
This is not trigonmetry. You may have to do some plotting of G(x). We cannot do the graphing for you. The relative extreme values can be obtained by setting the derivative equal to zero, giving 3 x^2 = 8 and solving for x Please show your work if you need further assistance.
Wednesday, November 12, 2008 at 11:12pm by drwls

Trig
sin 4x = 2sin(2x)cos(2x) = 2(2sinxcosx)(1 - 2sin^2 x) = 4sinxcosx(1 - 2sin^2 x) this is expressed in terms of trig functions of x.
Wednesday, February 17, 2010 at 4:46pm by Reiny

math(please help urgent)
1) A y = x/3 line makes an angle of arctan 1/3 with the x axis. That line is in the first quadrant (and also the third quadrant). You have not specified the quadrant. tan theta = 1/3, by definition sin theta = 1/sqrt10 (in the 1st quadrant) cos theta = 3/sqrt10 etc. 2) (a) ...
Friday, January 15, 2010 at 3:50pm by drwls

trig
Most of these questions can be answered by the definition of the general trigonometric functions: y = a sin A(x-φ) a is the amplitude 2π/A = period φ = phase shift. If you can transform the trigonometric functions into the above form and evaluate the ...
Thursday, December 17, 2009 at 12:00pm by MathMate

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!!!!
Thursday, March 8, 2007 at 10:40pm by kate 316

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(please help urgent)
1) Find the values (if possible) of the six trigonometric functions of o if the terminal side of o lies on the given line in the specified quadrant. y=1/3x 2)Evaluate (if possible)the sine, cosine, and tangent of the angles without a calculator. (a) 10pie/3 (b) 17pie/3
Friday, January 15, 2010 at 3:50pm by Hannah

Math C30
Solving Equations Containing Circular Functions ... Solve 2cos^2=1
Wednesday, November 2, 2011 at 1:05am by don

math
Trigonometry is the branch of mathematics that deals with the solution of triangles through the use of the trigonometric functions sine, cosine, tangent and their reciprocals. The trig function values derive from the ratios of the "x" and "y" values of a ...
Monday, March 3, 2008 at 9:37am by tchrwill

Domains of Functions
I dont understand how to do this problem, can you please help me? Given the functions f and g, determine the domain of f+g. 4. f(x)= 2x/(x-3) g(x)=3/(x+6)
Friday, September 14, 2007 at 9:43pm by Jules

Math C30
Solving Equations Containing Circular Functions : Solve 2cos sq x =1
Tuesday, November 1, 2011 at 10:00pm by don

physics
A car accelerates from rest at a constant rate A for some time after which it retards at a constant rate B to come to rest. If the time elapsed is T second,calculate the maximum velocity reached?(please try solving this problem by plotting velocity time graph and if you can ...
Sunday, September 30, 2012 at 11:44am by help me out it's urgent

math URGENT
please factor 2.75x^2-7x-120
Wednesday, December 19, 2012 at 7:51pm by TyLeR c URGENT

trig please
the circles go to the top and there measurements i included in the pictures and there are right angles
Monday, September 14, 2009 at 6:25pm by trig please

trig
solving radical equations... help! 5+¡în+1= n+4
Wednesday, December 8, 2010 at 6:35pm by bob

Trig
Help with solving radical fractions.
Tuesday, September 15, 2009 at 8:05pm by Anonymous

Trig functions
its just the capital S in A and lowercase s in C
Tuesday, February 12, 2008 at 3:54pm by Jon

Trig functions
ok, except what is the difference between A and C in #1 ?
Tuesday, February 12, 2008 at 3:54pm by Reiny

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!!!!
Friday, March 9, 2007 at 12:03pm by kate 316

Trigonometry
I cannot give a general answer to your question without seeing the actual problem In solving trig equations, you have to consider that each trig ratio is positive in 2 different quadrants and is negative in 2 different quadrants Usually answers are neede for the domain between...
Wednesday, June 9, 2010 at 5:11pm by Reiny

Venn Diagram (URGENT)
What are 6 similarities between Canada and Haiti? 1. French Influence 2. 3. 4. 5. 6. Please someone help, this is urgent. thank you.
Thursday, April 30, 2009 at 12:56am by John

Trig Identities
Please help...I'm not understanding trig identities and how to manipulate and express these two problems in their associated functions. Thanks a)Express as a function of cos (theta) 2 sin^2(theta) - 1 b)Express as a function of sin (theta) or cos (theta) tan^2(theta) - 2 ...
Tuesday, January 6, 2009 at 6:46am by Donovan

Math - Solving Trig Equations
thanks, I solved it :)
Wednesday, November 21, 2007 at 6:29pm by Anonymous

graphing trig functions
How to find general solutions
Friday, May 18, 2012 at 12:31am by Fhulufhelo

graphing trig functions
but for my quiz, i am not allowed a calculator
Friday, May 18, 2012 at 12:31am by bkue

trig
oh btw the last part is to to find if they are inverse functions
Wednesday, April 22, 2009 at 10:56pm by gab

Trig functions
I dont know thats just what it says in my book.
Tuesday, February 12, 2008 at 3:54pm by Jon

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