math
posted by sh .
Prove the identity:
1cos2x/sin2x = 1+tanx/1+cotx
I simplified the RS to tanx.
LS:(12cos²x+1)/2sinxcosx
(2+2cos²x)/2sinxcosx
How do I simplify the rest?
Respond to this Question
Similar Questions

Math
1)A piano tuner uses a tuning fork. If middle C has a frequency of 264 vibrations per second, write an equation in the form d=sinw(t) for the simple harmonic motion. 2) Verify the identity tan^2Xcot^2X/tanX+cotX=tanXcotX I'm not … 
Math  Trig  Double Angles
Prove: sin2x / 1  cos2x = cotx My Attempt: LS: = 2sinxcosx /  1  (1  2sin^2x) = 2sinxcosx /  1 + 2sin^2x = cosx / sinx  1 = cosx / sinx  1/1 = cosx / sinx  sinx / sinx  Prove: 2sin(x+y)sin(xy) = cos2y  cos2x My Attempt: … 
Math, derivatives
f(x) = x² + 2Cos²x, find f ' (x) a) 2(x+cos x) b) x  sin x c) 2x + sin x d)2(x  sin2x) I got neither of these answers, since the 2nd part should be chain rule, right? 
Trig check my work please?
tan(X+30)tan(30x)=2cos2x1 / (2cos2x+1) i just did (tanx)(tanx)=sin^2x/cos^2x would that work? 
Calculus
Solve identity, (1sin2x)/cos2x = cos2x/(1+sin2x) I tried starting from the right side, RS: =(cos²xsin²x)/(1+2sinxcosx) =(cos²x(1cos²x))/(1+2sinxcosx) and the right side just goes in circle. May I get a hint to start off? 
Math
simplify (cos4xcos2x)/(sin4x+sin2x) the answer choices are : cotx, tanx, cotxtanx, or 1 
Math please help quick
Which of the following are identities? Check all that apply. (Points : 2) sin2x = 1  cos2x sin2x  cos2x = 1 tan2x = 1 + sec2x cot2x = csc2x  1 Question 4. 4. Which of the following equations are identities? 
Precalculus/Trig
Prove the following identity: 1/tanx + tanx = 1/sinxcosx I can't seem to prove it. This is my work, I must've made a mistake somewhere: Converted 1/tanx: 1/sinx/cosx + sinx/cosx = 1/sinxcosx Simplified 1/sinx/cosx: cosx/sinx + sinx/cosx … 
Trigonometry
Prove: 1tanx/1+tanx=1sin2x/cos2x 
a math
Prove cotx1/cotx+1 = sec2x  tan2x I prove till cotx1/cotx+1 =1/1+tanx  tanx/1+tanx