# trig help much appreciated! :))

3,764 results-
## calculus

1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π? 2. what trig function never crosses the x-axis and has a value of 2 at π/6? are these correct? 3. what trig function has a period of π and is undefined for

*asked by anon on September 28, 2015* -
## CALCULUS HELP!!!

integrate 1/(x^2sqrt(1+x^2)) i know you have to use trig sub but iono how to cancel out some terms...much help is appreciated

*asked by kevin on March 19, 2009* -
## 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

*asked by raychael on April 13, 2007* -
## 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

*asked by Priya on April 22, 2008* -
## 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

*asked by Priya on April 22, 2008* -
## 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

*asked by Joshua on December 5, 2011* -
## trig

I am currently taking a trig class. I need help understanding how to solve for sin,cos, and tan in problems which give an angle and a side length or the hypotenus. Any help would be muchly appreciated

*asked by Ben on February 11, 2015* -
## Precalculus

How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?

*asked by Jess on August 6, 2011* -
## Calculus

so we are doing integrals and I have this question on my assignment and I can't seem to get it, because we have the trig substituion rules, but the number isn't even so its not a perfect square and I just cant get it, so any help would be greatly

*asked by Tracy on June 11, 2007* -
## 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!

*asked by Jennifer on January 5, 2010* -
## Math-Trigonometry

Show that if A, B, and C are the angles of an acute triangle, then tan A + tan B + tan C = tan A tan B tan C. I tried drawing perpendiculars and stuff but it doesn't seem to work? For me, the trig identities don't seem to plug in as well. Help is

*asked by Sam on November 6, 2013* -
## Trigonometry - Identities and proof

Show that cot((x+y)/2) = - (sin x - sin y)/(cos x - cos y) for all values of x and y for which both sides are defined. I tried manipulating both sides in terms of trig identities but I don't really have a solution....help would be appreciated, thanks.

*asked by Sam on November 13, 2013* -
## 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

*asked by hilde on March 14, 2010* -
## Pre-Cal

[Note: I'm still having issues with identities with regard to trig] Verify the Trig. identities: (a). cot(x+y)=(cotxcoty-1)/(cotx+coty) (b). sin0(cot0+tan0)=sec0 [Note: 0=theta symbol]

*asked by Amber on July 12, 2016* -
## Math (integrals) (Trig Subsititution)

Find ∫1/((x^2+5)^(3/2)) dx I figured this would be a trig substitution problem, so I set x = sqrt(5)tanθ and dx = sqrt(5)sec^2(θ) dθ This would lead to: ∫(sqrt(5)sec^2(θ)) / (5tan^2(θ) + 5)^(3/2) dθ But I'm kinda lost on what to do next. I'm used

*asked by Ray on May 12, 2017* -
## trig

hi, I have a placement test coming up tomorrow, and I'm pretty confident about all the stuff that's going to be there except trigonometry. I took trig two years back and I understood it very well. But now it's been so long and I can't even remember the

*asked by y912f on June 1, 2010* -
## Trigonometry

Hi, I need help with this question: Use the addition and subtraction formulas ti fubd the exact values of the trigonometric ratios: cos(-7pi/12) Okay, I'm just having trouble with a rather basic part of the question... I wrote cos(pi/4 + pi/3), but now I

*asked by Lucy X on December 8, 2008* -
## Trigonometry/Geometry - Inequalities

Let a, b, and c be positive real numbers. Prove that sqrt(a^2 - ab + b^2) + sqrt(a^2 - ac + c^2) is greater or equal to sqrt(b^2 + bc + c^2). Under what conditions does equality occur? That is, for what values of a, b, and c are the two sides equal? This

*asked by Sam on December 7, 2013* -
## calculus-integration!

should i use substitution?? if yes how should should i use it? plz i need some directions? k plz someone?...so far i used trig. substitution. i got a=8, so i used x=asin(è)so according to this substitution i got x=8sin(è) and dx=8cos(è) dè...then i

*asked by Maria on May 6, 2007* -
## Calculus

Okay so I have a question on my assignment that says: You are given that tan(y) = x. Find sin(y)^2. Express your answer in terms of x. I know its derivatives, and I've tried taking the derivatives of both etc, and got them both to come out as cos(y)^2,

*asked by Tracy on October 21, 2006* -
## 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

*asked by Jalopy on November 21, 2012* -
## math (final trig problem)

Solve for x on the interval [0,π/2): cos^3(2x) + 3cos^2(2x) + 3cos(2x) = 4 I havent done trig for a while so what exactly does that mean in solving for x on that interval and how would i go about doing that? Where are you getting these tough trig

*asked by jacob on May 1, 2007* -
## math (trig)

i have some problems doing trig the first one is: Show that cos(x/2) sin(3x/2) = ½(sinx + sin2x) i know that you are supposed to substitute all those trig function things in it but i kind of forgot how to the only that i can see substituting in is the

*asked by jacob on April 30, 2007* -
## MATH PLEASE

can a reference angle be negative? Tye "reference angle" in google and check out the mathwords site :) no I copied and pasted the mathwords page for you, unfortunatly the diagram that was with it cant, express itself in text so it didn't appear. For any

*asked by Kamen on November 22, 2006* -
## I have a question concerning Spring Semester

Im a freshman in college and I just took Chem1, Trig, and Drama (12units). I am planning on taking Chem2, Pre-Calc, and Art1 for spring sem. (13units). I'm not sure if this is too much to take for next semester considering two five unit classes or should I

*asked by L.Bianchessi on December 23, 2011* -
## calculus

Integrate x/(x^2 + 4) dx via trig substitution and by u=x^2+4 substitution. Show that results are equal. Via trig substitution of x=2 *tan t, I get: 1/2 * tan^-1 (x/2) + c Via u = (x^2 + 4) substitution, I get: 1/2 * ln |x^2 + 4| + c How are these equal?

*asked by mathstudent on December 31, 2007* -
## Trigonometry

I have some trigonometric equations to do, but I'm pretty lost, and I have to get them done in a timely fashion, so any help would be much appreciated. "Solve the following trig equations. Give all the positive values of the angle between 0 degrees and 360

*asked by Gary on March 9, 2011* -
## math

Some people believe that calculators have eliminated the need to learn the skills required to perform mathematical operations by hand. State your position on this belief, and then support your position with real-life stories or examples I will be happy to

*asked by carmen on March 4, 2007* -
## geometry

In parallelogram TRIG, m∠R = 2x + 19 and m∠G = 4x - 17. What is m∠T

*asked by miguel on February 26, 2012* -
## Algebralgebrad

Trig ientities

*asked by yaga on September 4, 2016* -
## MATH

Integrate 1/(x(x^2+1)) dx using trig substitution

*asked by ANON on July 24, 2016* -
## trig

what is the exact value of 7pi for all trig func.?

*asked by claire on February 2, 2010* -
## Trig

Trig Identity. 1-sin^2x/1-cosx

*asked by Jill on May 15, 2011* -
## Trig

Solve the following trig equation 2cos(x-π/6)=1

*asked by Matt on January 31, 2012* -
## Trigonometry

Use trig form to find quotient 3/(2+3i)

*asked by Shannon on November 17, 2015* -
## Pre- Calculus

Evaluate the trig function tan33degress

*asked by Steve on February 24, 2012* -
## math

simplify sin(540-2x) this is to do with trig

*asked by allie on May 10, 2013* -
## Pre Calc , Math

Find the 6 Trig ratios of -7Pie/3

*asked by Joe Daddy on January 3, 2011* -
## trig

What is the range of the trig function sin(-3x+3)?

*asked by Chaitanya on April 21, 2008* -
## MATH

Solve the integral using trig substitution (1/((x)(x^2+1)))dx

*asked by ANON on July 24, 2016* -
## trig

how to i find the six trig values for (7pi/3)

*asked by Rak on January 13, 2010* -
## math

I need help with this trig problem cotθ=-√3/3 and 3/2π≤θ≤π, find θ

*asked by arlene on October 8, 2012* -
## trig

write 2+2 squareroot of 3i in trig form.

*asked by ky on May 17, 2012* -
## Trig

Find (if possible) the trig function of the quadrant angle.

*asked by Master chief on June 6, 2011* -
## math

how do i solve this using trig identities? 2 csc^2x = 3 cot^2x-1

*asked by Kayla on October 17, 2007* -
## Geometry.

HELP WITH ALOT OF QUESTIONS? TRIG? I don't get any concepts.

*asked by Amy. on January 25, 2010* -
## Trig

csc thea= -2, quadrant 4. what are the six trig functions?

*asked by Shay on May 6, 2013* -
## trig

write a product of two trig functions that equals 1.

*asked by Dani on November 7, 2011* -
## Trigonometry

Can you please help me solve this trig equation for 0 ≤ x ≤ 2π? 9sin^2(x)-6cos(x)-10=0 Thank you!

*asked by Lucy X on December 8, 2008* -
## Precal

Write down 3 other possible trig forms for - 1 + isqrt2. How do you solve this?

*asked by Mayhem on February 25, 2012* -
## Math (trigonometry)

Find the value of each of the remaining trig functions. Cscè=-4, ð

*asked by Anonymous on April 12, 2010* -
## trig

what's the single trig. function of cos6xcosx-sin6xsinx

*asked by MIK on May 17, 2012* -
## trig

use the unit circle to find the exact value for all the trig functions of è=2ð/3.

*asked by Anonymous on February 2, 2010* -
## trig

TRIG Identities, Gr. 12: Prove: cot4x=1-tan^2x/2tan2x

*asked by Josh on May 23, 2013* -
## Geometry

30-60-90 triangle has a hypoteneuse of 10 use trig to find the short side

*asked by Christa on August 3, 2011* -
## trig

how do i do this? give the signs of the six trig functions for each angle: 74 degrees?

*asked by Tay on December 3, 2008* -
## Calculus

Integration with trig functions Integral of [(1-sinx)/cos^2x] dx

*asked by Anonymous on February 13, 2015* -
## Calculus....

can you show me how to maniplate this using Trig subtitution... integral dx/4+x^2 x is bounded on [-2, 2]

*asked by belll on October 12, 2010* -
## Math

Find the exact value of the trig function below. cos2Ø if sinØ = 2/5

*asked by Sophie on March 19, 2017* -
## Calc

How do you do the derivative of an inverse trig function? arcsin (sqrt2/2)??

*asked by Hannah on October 27, 2011* -
## pre calculus 2

use the fundamental trig. Identities to simplify tan^4x+2tan^2x+1

*asked by denise on July 25, 2011* -
## Math

What is the inverse trig function cotangent of square root of 3/3? What is the value?

*asked by Bob on March 19, 2013* -
## college

Trig help... equation on the interval [0,2pi]? 2sin^2(x)=sin(x)

*asked by Sam on November 4, 2010* -
## trigonometry

simplify sin7x-sin3x as a product of trig functions.

*asked by casey on April 20, 2011* -
## trig

What is the shift along x of the following trig functions? y = (3sinx/2) + 4 y = -2sin(x)-4 y = sin(-3x + 3)

*asked by Amandeep on April 21, 2008* -
## Math

Required to Prove the following trig identity: (cos2x)^2 + (sin2x)^2 = 1

*asked by Halle on June 18, 2009* -
## trig

How do you solve cos(2arcsin 1/4) using inverse trig. functions??!! PLEASE HELP ME!

*asked by Tor on May 9, 2011* -
## trig

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?

*asked by Chaitanya on April 22, 2008* -
## senior year

does anyone know what consumer math is? i'm trying to take it for my senior year, but i'm not sure what it's about. or if i can take it after trig and algebra.

*asked by y912f on May 17, 2009* -
## trig

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?

*asked by Priya on April 22, 2008* -
## math

how would you solve for x: (3)^.5sin(2x)-2cos(2x)+2sin^2(x)=1 using trig identites. please help

*asked by mike on May 4, 2009* -
## trig

What kind of reflections are the following trig functions? y = 3cos(x-1) y = sin(-3x+3) y = -2sin(x)-4

*asked by Joshua on April 21, 2008* -
## trig

find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3

*asked by karen on September 15, 2011* -
## math

what is 7-2i in trig form? and if u=3j and v=7i+j what is the dot product of u times v don't get this one because there are no i terms for u thanks

*asked by jane on December 30, 2010* -
## math

In right triangle ABC, a = 52 ft and c = 63 ft. Which of the following trig ratios of angle B, would combine the given sides?

*asked by msmith on April 14, 2013* -
## gr 12. advanced functions

Trig identity Prove: cos2x tan(pie/4 - x) ------- = 1 + sin2x

*asked by avm on November 21, 2009* -
## math

(-3/5, 2) is a point on the terminal side of theta, find the value of the six trig functions

*asked by Amina on November 20, 2012* -
## Trig

Find (if possible) the trig function of the quadrant angle. sec 3pi/2

*asked by Master chief on June 6, 2011* -
## trig

simplify to a constant or basic trig function.. 1+tan(x)/1+cot(x)

*asked by hilde on March 14, 2010* -
## Calculus

1. integral (x^3 * sqrt(x^2-4)) dx I'm confused on how to start this problem, if I am doing trig substitution.

*asked by K on April 5, 2015* -
## Trig

find the exact values of the six trig functions of angle... sin(-315degrees) how do i do this?

*asked by ALISON on September 2, 2011* -
## trig

find the exact values of the six trig functions of theta equals six pi divided by 8

*asked by don on October 18, 2011* -
## college Calculus Help!

Find the derivative of the function. 1. F(x)= (1+2x+x^3)^1/4 2. f(t)= (1+tant)^1/3 ---> i hate trig. 3. y=4sec5x 4. y=xsin√x

*asked by dania on February 25, 2012* -
## trig

express the trig. ratios sinA,secA n tanA in terms of cotA.

*asked by Anonymous on May 7, 2011* -
## Pre-calculus

find the trig functions of angle x if the terminal side of x passes through the point (-12, 5).

*asked by Lala Kennedy on August 8, 2011* -
## 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

*asked by Claire on January 19, 2012* -
## trig

find the 5 other trig functions if cos(theta) = square root of 2/2 and cotangent is less than 0

*asked by kelly on June 9, 2010* -
## Trig

Does anybody know a good website that will help me with finding the six trig functions of a point NOT on the unit cricle?

*asked by Anonymous on September 16, 2009* -
## Please help me with trig.

One more problem.. Given sin t= 3/11 and cos t

*asked by Jane on January 27, 2016* -
## math

4cot^2x-4/tanx+cosxsecx factorin algenraic single trig function

*asked by josh on April 26, 2011* -
## 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

*asked by Claire on January 19, 2012* -
## trig

if (-12,5) is a pointon the terminal side of an angel 0 find the exact value of six trig funcation of 0

*asked by sal on June 19, 2014* -
## college Calculus Help!

Find the derivative of the function. 1. F(x)= (1+2x+x^3)^1/4 2. f(t)= (1+tant)^1/3 ---> i hate trig. 3. y=4sec5x 4. y=xsin√x

*asked by dania on February 25, 2012* -
## Pre-Calc

Consider a triangle ABC. C is a right angle, and side a is opposite angle A, side b is opposite angle B, and side c is the hypotenuse. The measure of side a= 2, side b= 7, and side c= 7.3 How do you find the angle measure of A and B based on the lengths of

*asked by Chris on September 20, 2006* -
## TRIG!

Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6 x=1 - (3/4)sin^2 2x work on one side only! Responses Trig please help! - Reiny, Monday, February 23, 2009 at 4:27pm LS looks like the sum of cubes sin^6 x + cos^6 x = (sin^2x)^3 +

*asked by hayden on February 24, 2009* -
## Math 12

trig question 2sin^2x+sinx-6=0 how to solve for x when the restriction is x is greater than or equal to zero but less than 2pi

*asked by H on October 21, 2010* -
## Math Help

Permutation and combinations (Trig/alg2 class) In how many ways can all the letters in SEYCHELLES be arranged?

*asked by Mary on June 10, 2013* -
## math

The terminal side of theta is in Quadrant III and lies on the line y = 2x. What are the 6 trig functions?

*asked by Becky on April 12, 2010* -
## Calculus

Integrate [1/square root of(e^(2x)-1)]. I have to use u substitution. We are doing the integrals of inverse trig functions, but I cannot get it to work out!

*asked by Elaine on February 6, 2012* -
## precalculus

how you do you use the power-reducing formula to find the exact value of the trig function: sin^2(37pi/12)

*asked by Jessica on December 13, 2010*