Search: Precalculus/Trig 3

Number of results: 8,149

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/precalculus
M = sin x/cos c = tan x
Tuesday, December 13, 2011 at 10:49am by Damon

trig/precalculus
Hmm. By the time you get to trig, a little algebra I should not throw you. M w cosx = w sinx M = w sinx / w cosx = sinx/cosx = tanx Where did you get stuck on the way?
Tuesday, December 13, 2011 at 12:31am by Steve

Precalculus/Trig 6
follow the steps that I showed you in previous post
Monday, October 8, 2012 at 9:05am by Reiny

Precalculus
sin^2 x + cos^2 x = 1 VERY IMPORTANT trig identity
Thursday, January 26, 2012 at 10:37pm by Damon

precalculus
how you do you use the power-reducing formula to find the exact value of the trig function: sin^2(37pi/12)
Sunday, December 12, 2010 at 10:51pm by Jessica

Precalculus/Trig 6
Find the exact value of the following trigonometric functions: sin(13pi), cos(14pi), tan(15pi)
Monday, October 8, 2012 at 9:05am by Greg

Precalculus with Trig
Rewrite the following expression as an algebraic expression in x: cos(arcsin(x))
Sunday, April 7, 2013 at 1:38pm by Natalie

Precalculus Someone please help
You know you are in quadrant IV by CAST, the cosine, (and the secant), are positive in that quadrant. All other trig ratios are negative. You also know you are dealing with a 9-40-41 right-angled triangle, since 9^2 + 40^2 = 41^2. so x=40, y = -9 , and r = 41 Now you can state...
Monday, December 6, 2010 at 10:19am by Reiny

precalculus
I would draw a right-angled triangle, marking the "vertical height" with 1808, and the base angle as 25.2º does the trig ratio opposite/hypotenuse ring a bell?
Tuesday, November 18, 2008 at 8:10pm by Reiny

Precalculus/Trig 5
Find the exact value of thet following trigonometric functions: tan(5pi/6) tan(7pi/6) tan(11pi/6)
Monday, October 8, 2012 at 9:03am by Greg

precalculus
thank you my precalculus is now done - chemistry is next- can't wait!!
Sunday, January 15, 2012 at 5:53pm by Sara

Precalculus/Trig 5
sin(26) = (120+15)/guywire where guy wire is the length of the guy wire
Monday, January 14, 2013 at 1:43am by Jennifer

Precalculus/Trig 5
Let its length be h After making a sketch , I can see that sin 26° = 105/h h = 105/sin26 = 239.52 or 239.5 ft
Monday, January 14, 2013 at 1:43am by Reiny

Precalculus
I'm interested in teaching myself Precalculus and would like to find a good book with lesson plans and assignments. Any ideas?
Friday, January 8, 2010 at 2:40pm by Sheryl

Precalculus with Trig
make a sketch of a rightangled triangle label the base angle Ø, then opposite side is x hypotenuse is 1 then the adjacent side is √(1 - x^2) so cos(arcsin(x)) = √(1-x^2)1
Sunday, April 7, 2013 at 1:38pm by Reiny

trig/precalculus
A crate weighing w pounds sits on a ramp positioned at an angle of x with the horizontal. The forces acting on this crate are modeled by the equation Mwcosx = wsinx, where M is the coefficient of friction. What is an expression for M in terms of x? A. M = tanx B. M = cotx C. M...
Tuesday, December 13, 2011 at 12:31am by A

Precalculus/Trig 3
The degree measure of an angle theta is 40 degrees. What is the radian Measure of theta? at what point P does the terminal ray intersect the unit circle (what is the ordered paid P(____, ___)?
Monday, October 8, 2012 at 9:02am by Greg

Precalculus/Trig 5
A radio transmission tower is 120 feet tall. How long should a guy wire be if it is to be attached 15 feet from the top and is to make an angle of 26 degrees with the ground? Give your answer to the nearest tenth of a foot
Monday, January 14, 2013 at 1:43am by Anonymous

Precalculus with applications
The course iam taking is Advanced Mathematical Concepts/Precalculus with Applications. Thank for your help.
Wednesday, November 19, 2008 at 4:13am by Mary

Precalculus
Consider the equation 7sin^2x - (4sin2^x)/cosx = -1 a) Put the equation in standard quadratic trig equation form. Why is it 7sin^2x - 8sinx + 1 =0?
Friday, January 27, 2012 at 8:21pm by Melissa

Precalculus with applications
f(x)=-4x^2 g(x)=2/x so g(f(x))= 2/(-4x^2)=-1/2x^2 I am wondering why you titled this Precalculus with applications? This problem is certainly content for algebra II. Is someone playing with course names again?
Wednesday, November 19, 2008 at 4:13am by bobpursley

Precalculus
That is simply the trig identity sin^2 x + cos^2 x = 1 You can show it easily with a right triangle with 90 deg at C where a^2 + b^2 = c^2 sin A = a/c cos A = b/c so sin^2 A = a^2/c^2 cos^2 A = b^2/c^2 and we know c^2 sin^2 A + c^2 cos^2 A = c^2 so sin^2 A + cos^2 A = 1
Saturday, March 24, 2012 at 12:43pm by Damon

Pre-calculus
So, since you know Cos x= 0.8, plug in to the calculator Cos inv of 0.8. Do the same for Cos Y= 12/13. X=36.9 degrees Y=22.6 degrees I think that where you are in precalculus, you have to know these trig identities. You MUST memorize them as they are the basis of good ...
Friday, February 17, 2012 at 12:58am by yoyoma

Precalculus Test
I have a precalculus test coming up and I'm not really understanding how to do everything. Please help. 1. Find the angle betweem 0 and 2pi which is coterminal to the angle -(7pi)/5. Now convert the angle you just found to degrees.
Monday, April 8, 2013 at 4:41pm by marie darling

Precalculus/Trig 5
You should be able to make a quick sketch of the following right-angled triangles 30° - 60° - 90° ---> π/6rad - π/3rad - π/2 ---> 1 -- √3 -- 2 and 45° - 45° - 90° --> π/4 - π/4...
Monday, October 8, 2012 at 9:03am by Reiny

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

precalculus
Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? fog=foh but g is not equal to h. I tried with many functions but not getting like f=x g=1+x then h=?or any other example so that we get fog=foh
Sunday, September 23, 2012 at 2:57am by Fatima

Precalculus/Trig 3
180° = π radians , (memorize this relationship) so 1° = π/180 radians then 40° = 40(π/180) = ...
Monday, October 8, 2012 at 9:02am by Reiny

Precalculus
I've tried many times to get the equation to balance using trig identities like half-angle formulas, power-reducing formulas, and double angle formulas, but I couldn't get the equation to equal out. I only need to work one side to make it equal to the other, like a ...
Thursday, December 2, 2010 at 10:11pm by Christina

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
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
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

calculus
If you are weak in math, what you need is a precalculus site (or algebra/trig/functions). I would not try to get ahead of the calculus course you will be taking. Try this one: http://jwbales.home.mindspring.com/precal/
Monday, July 28, 2008 at 9:36pm by drwls

Precalculus
Print out the "trig wheel" on this page, it will come in handy http://ll043.k12.sd.us/slides/trigonometry.htm
Monday, November 22, 2010 at 10:15am by Reiny

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

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
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

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

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

PreCalculus (PLEASE HELP, IM BEGGING!)
Can anyone please explain these problems to me?? I really need help!I need to simplify these trig expressions but I don't understand how my teacher is doing it at all and I have a quiz on this tomorrow! I've really been trying but I just don't get it! 1)Mulitply: [...
Saturday, May 5, 2012 at 2:09am by Valerie

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

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

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

MATH
Good find!! http://www.humboldt.edu/~dlj1/PreCalculus/Images/UnitCircle.html
Wednesday, June 4, 2008 at 5:12pm by Writeacher

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

Please Help!!!!!!
Decide whether the following problem can be solved using precalculus, or whether calculus is required. If the problem can be solved using precalculus, solve it. If the problem seems to require calculus, explain your reasoning and use a graphical or numerical approach to ...
Monday, January 9, 2012 at 5:00pm by Anonymous

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
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]

trig
2sin(4x)[(cos(3/2)x)(cos(5x/2)-sin((15/4)x)]+x can someone simplify this using trig identities?
Sunday, May 13, 2012 at 9:08pm by Brianna

trig
405 I THINK I *'S 15 BY 27 AND GOT 405. NOW THAT IVE HELPED YOU WITH TRIG CAN YOU HELP ME WITH INTRODUCTORY ALGEBRA
Saturday, October 16, 2010 at 4:00pm by Alicia

trig
combine fractions and simplify to a multiple of a power of a basic trig. function.? sin x/cot²x - sin x/cos²x
Monday, March 15, 2010 at 5:37pm by hilde

Trig
HELP!!!! I dont know how to do the trig identity with this problem csc^4 x-cot^4x= Csx^2 x + cot^2x
Thursday, March 8, 2012 at 9:04am by Quetzally

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