# Math

posted by .

Prove 1+sec2x / tan2x = cotx

• Math -

(cos2x+1)/cos2x / sin2x/cos2x
(cos2x+1)/sin2x
(2cos^2 x - 1 + 1)/(2sinx cosx)
2cos^2 x/(2sinx cosx)
cosx/sinx
cotx

## Similar Questions

1. ### 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^2X-cot^2X/tanX+cotX=tanX-cotX I'm not …
2. ### math

sin2x-cotx = -cotxcos2x Using the various trigonometric identities(i.e. double angle formulas, power reducing formulas, half angle formulas, quotient identities, etc.) verify the identity. I first added cotx to both sides to get sin2x …
3. ### trigonometry

Prove: tan2x+sec2x = cosx+sinx/ cosx-sinx
4. ### Trig math

PLEASEE HELPPMEEE!!!! cot2x+sec2x=tan2x+csc2x and 1+2sinxcosx/sinx+cosx=sinx + cosx
5. ### Math

can you prove this equation for me? sin2x X sec2x = 2sinx
6. ### Trig

Prove the following functions: (sinx+sin2x)/(1+cosx+cos2x)=tan x (cos3x/sinx)+(sin3x/cosx)=2cot2x tan2x=(2/cotx-tanx) theses are due in the am. Fastness would be great?
7. ### trigonometry

Prove cotx-1/cotx+1=1-sin2x/cos2x
8. ### math

cotx+tan2x=cotxsec2x prove