Prove the following functions: (sinx+sin2x)/(1+cosx+cos2x)=tan

Prove the following functions:(sinx+sin2x)/(1+cosx+cos2x)=tan x (cos3x/sinx)+(sin3x/cosx)=2cot2x tan2x=(2/cotx-tanx) theses are
1. 2 answers
2. asked by jared
3. 1,090 views
Where do I start to prove this identity:sinx/cosx= 1-cos2x/sin2x please help!! Hint: Fractions are evil. Get rid of them. Well,
1. 0 answers
2. asked by maria
3. 824 views
prove identitySin2x - sinx/cosx + cos2x= sinx/cosx + 1
1. 1 answer
2. asked by Matthew
3. 1,176 views
Prove:sin2x / 1 - cos2x = cotx My Attempt: LS: = 2sinxcosx / - 1 - (1 - 2sin^2x) = 2sinxcosx / - 1 + 2sin^2x = cosx / sinx - 1 =
1. 5 answers
2. asked by Anonymous
3. 1,438 views
Prove the identity((Cos²x - sin²x) ÷ (cosx + sinx) ) + sinx
1. 1 answer
2. 133 views
Solve the equation of the interval (0, 2pi)cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came
1. 4 answers
2. asked by Brian
3. 796 views
Verify the identity:tanx(cos2x) = sin2x - tanx Left Side = (sinx/cosx)(2cos^2 x -1) =sinx(2cos^2 x - 1)/cosx Right Side = 2sinx
1. 0 answers
2. asked by Ashley
3. 1,242 views
Hi, I need a bit of help with verifying identities. The problems are as follows:sinx+cosx/cotx+1=sinx sin2x/sin -
1. 2 answers
2. asked by Retrograde
3. 628 views
how does this work?(Sin2x+cos2x+2sin²x)/(sinx+cosx) = (sinx+cosx
1. 0 answers
2. asked by Tim
3. 579 views
Simplify #1:cscx(sin^2x+cos^2xtanx)/sinx+cosx = cscx((1)tanx)/sinx+cosx = cscxtanx/sinx+cosx Is the correct answer
1. 1 answer
2. asked by Anonymous
3. 1,345 views