trigonometry math

4 sin 2x + 3 = 4 cos x + 6 sin xHow do i solve this trigonometry question? I can not seem to find a to replace identities that would be able...

Posted by chiefmit93 July 2, 2011 at 8:55 PM via web. Be the first to answer. »

Prove that cos x+sinx /cosx-sinx equal to 1+sin2x/cos2x

Posted by cica777 June 20, 2011 at 10:01 AM via web. 1 educator answer. »

What is the sum of functions sin 135+cos150? please explain the sum

Posted by karladahl June 12, 2011 at 2:17 AM via web. 1 educator answer. »

Prove the trigonometric identity cot 2x=csc 2x-tanx.

Posted by articsonia June 12, 2011 at 1:23 AM via web. Be the first to answer. »

How to solve the equation square root 3*sin x-cosx=0?

Posted by doorsreb June 8, 2011 at 11:41 PM via web. Be the first to answer. »

trigonometryProve  that cos2x(1 + tanx*tan2x) = 1

Posted by lessoflot June 2, 2011 at 11:44 PM via web. 1 educator answer. »

How do you consider to solve this equation sin 2x+sinx+cosx=1? i have no idea what to do.

Posted by peux June 1, 2011 at 11:31 PM via web. Be the first to answer. »

Determine tan 2x if tanx=2/3?

Posted by carrotpie May 31, 2011 at 1:30 PM via web. Be the first to answer. »

Solve the equation sin^6x + cos^6x = 1 .

Posted by bibiloi May 24, 2011 at 10:18 PM via web. Be the first to answer. »

Given sin x=-1/8, what is tan 2x if x is in the interval (pi,3pi/2)?

Posted by guteskind May 22, 2011 at 3:08 PM via web. Be the first to answer. »

Determine the value f(pi/4) if f(x)=cos^2 x- sin(2x)?

Posted by anneenna May 22, 2011 at 1:37 PM via web. Be the first to answer. »

What is the solution of the equation 2six*sin3x-cos4x=0?

Posted by errgonomix May 17, 2011 at 12:05 AM via web. 1 educator answer. »

Find all solutions of the equation in the range [0;pi] . Identify solutions of the equation in [0;pi] . 1 + cosx + cos2x = 0

Posted by deuxtoi May 10, 2011 at 4:01 AM via web. 1 educator answer. »

Find the exact value of trigonometric function sec2x if sinx =3/5, cosx=4/5Find the exact value of trigonometric function sec2x if sinx =3/5,...

Posted by leeaeel May 10, 2011 at 2:43 AM via web. 1 educator answer. »

What is sin(x+y) if sinx+cosy=1/4 and cos x+siny=1/2 ?

Posted by labrrat May 6, 2011 at 5:31 PM via web. 1 educator answer. »

Find x.Find x if cos(2x+pi/2)=cos(x-pi/2).  

Posted by istetz May 3, 2011 at 12:34 AM via web. Be the first to answer. »

Exact value:find the exact value: sin[arccos(3^(1/2) / 4]

Posted by iszabelle May 2, 2011 at 4:27 AM via web. Be the first to answer. »

Verify if the equations sinx+cosx=0 and sinx-cosx=0 have the same solutions in the set [0,2pi)

Posted by else9393 April 29, 2011 at 10:20 PM via web. Be the first to answer. »

Solve the angle:Use the law of cosines to solve the angle V in triangle VGK if KG=25, VG=33,5, <G=46 degrees.

Posted by pavelpimen April 28, 2011 at 3:31 AM via web. Be the first to answer. »

Find x Given 2 - sec4x = 0, what is x ?

Posted by gudeapp April 28, 2011 at 1:37 AM via web. Be the first to answer. »

find x.Find x if cot(x + 1) - 3^1/2 = 0 

Posted by margarethe April 27, 2011 at 3:28 AM via web. Be the first to answer. »

Prove that tana*tanb+tana+tanb=1 if a,b are in the interval(-pi/2,pi/2), such as a+b=pi/4 .

Posted by printsaltr April 27, 2011 at 2:27 AM via web. Be the first to answer. »

What is cosx if cos2x=1/2 and x is in the interval (90,180)?

Posted by maisaphie April 27, 2011 at 1:26 AM via web. Be the first to answer. »

cos problemGiven sinx/cosx=2 determine cos^2x.

Posted by fortunee April 19, 2011 at 5:32 AM via web. 1 educator answer. »

Determine the values of x, 0<x<2pi, if the identity is true: cos^6 x=1-sin^6 x

Posted by oldcareer April 18, 2011 at 2:42 AM via web. 1 educator answer. »

Find the number of the solutions of equation 99sin^2x-101=-sin^2x.

Posted by magnet1qu3 April 18, 2011 at 1:36 AM via web. 1 educator answer. »

equation .Find x if sin^2x=1/4 .

Posted by margarethe April 13, 2011 at 4:22 AM via web. 1 educator answer. »

values in degrees and radiansa=arcsin(square root3/2) b=arccot(-1) c=arccos(1/2)

Posted by javiya April 9, 2011 at 1:30 AM via web. Be the first to answer. »

Evaluate the trigonometric sum sin(pi/3)+sin(2pi/3)+sin(3pi/3)+sin(4pi/3) .

Posted by sixpenpencil April 7, 2011 at 4:36 AM via web. 1 educator answer. »

Calculate sin2a if sina+cosa=1/3

Posted by fromici April 7, 2011 at 3:25 AM via web. 1 educator answer. »

I need to find the solution of equation sin^3x*sin3x+cos^3x*cos3x=0

Posted by siteulove April 4, 2011 at 4:30 PM via web. Be the first to answer. »

What is the value of expression cos^2(x-y)+cos^2(x+y)-cos2x*cos2y?

Posted by peux April 4, 2011 at 2:47 AM via web. 1 educator answer. »

Given that x+y=z, what is numerical value of expression cos^2x+cos^2y+cos^2z- 2cosx*cosy*cosz?

Posted by mikok March 24, 2011 at 12:18 AM via web. Be the first to answer. »

What is t if identity cos2x+2sin^2 (x)+t=0 is true?

Posted by lilfinance March 21, 2011 at 4:44 PM via web. 1 educator answer. »

Solve for x: 10tanx-1+9tan-x=0

Posted by landishigh March 21, 2011 at 1:17 AM via web. Be the first to answer. »

What x satisfies the identity -2(sin2x+1)/3=sinx+cosx ?

Posted by museinspires March 21, 2011 at 1:00 AM via web. Be the first to answer. »

What is the exact value of the sum sin x+0.5=?

Posted by rusrissa March 19, 2011 at 10:34 PM via web. Be the first to answer. »

Solve the trigonometric equation sin 6x=-cos (3x), using double angle identity.

Posted by hallman March 19, 2011 at 10:14 PM via web. Be the first to answer. »

What is the bound between sine of an angle and cosine of double angle ?

Posted by galbenusa March 19, 2011 at 7:06 PM via web. Be the first to answer. »

Verify the identity 1+sinx=cos(90-x)+ cot45

Posted by errgonomix March 13, 2011 at 1:34 AM via web. 1 educator answer. »

Solve for x the following 3cos(3x-1)=0.

Posted by cartoffried March 10, 2011 at 11:40 PM via web. 1 educator answer. »

Determine the value of sum tan pi/4+sin a=?

Posted by orlovolga March 10, 2011 at 6:36 PM via web. Be the first to answer. »

solve the equation (sin B)^2- 3sin B +2 =0 where 0 ≤ B ≤ 2π

Posted by alin-aquamarine March 8, 2011 at 11:45 AM via web. 1 educator answer. »

Verify if sin25+sin35=cos5

Posted by l0l1 March 8, 2011 at 1:33 AM via web. 1 educator answer. »

What are the zeros of the function f(x)=sinx+cosx found in interval (0,pi)?

Posted by printsaltr March 7, 2011 at 8:37 PM via web. 1 educator answer. »

What is x if 100sinx-99cosx=0?

Posted by lessoflot March 3, 2011 at 4:53 PM via web. 1 educator answer. »

Prove that (sin x)^2*[1 + (cot x)^2] = 1

Posted by ginasomething March 3, 2011 at 12:12 AM via web. 1 educator answer. »

Simplify the fraction [cosx*sin(2x)-2sinx]/sin^2 x*cosx=?

Posted by pengui March 3, 2011 at 12:09 AM via web. 1 educator answer. »

Find solutions of the trigonometric equation sin 12x+cos 6x=0?

Posted by idaberg February 27, 2011 at 1:08 AM via web. 1 educator answer. »

find the angle x if tan^2 x-4sec x+5=0?

Posted by adwhatsite February 27, 2011 at 12:49 AM via web. 1 educator answer. »