Friday

July 25, 2014

July 25, 2014

Posted by **Veronica** on Wednesday, January 6, 2010 at 2:23pm.

2sinx+sin2x = 2sin^3(x)/1-cosx

- math -
**Reiny**, Wednesday, January 6, 2010 at 2:40pmLS = 2sinx + 2sinxcosx

= 2sinx(1 + cosx)

= 2sinx(1 + cosx)**(1-cosx)/(1-cosx)**

= 2sinx(1 - cos^2x)/(1-cosx)

= 2sinx(sin^2x)/(1-cosx)

= 2sin^3x/(1-cosx)

= RS

- math -
**Veronica**, Wednesday, January 6, 2010 at 5:57pmThank you Reiny!

**Related Questions**

math - Please prove: 2sinx+sin2x = 2sin^3(x)/1-cosx

Math - Trig - Double Angles - Prove: sin2x / 1 - cos2x = cotx My Attempt: LS: = ...

maths - hey, i would really appreciate some help solving for x when: sin2x=cosx ...

Trigonometry - Verify the identity. sin2x/cosx + sinx = 2sinx Solve for all ...

Trig (Last URGENT) - sin2x+cosx=0 , [-180,180) = 2sinxcosx+cosx=0 = cosx(2sinx+1...

Math - can you prove this equation for me? sin2x X sec2x = 2sinx

Trig - Verify the identity: tanx(cos2x) = sin2x - tanx Left Side = (sinx/cosx)(...

math - tanx+secx=2cosx (sinx/cosx)+ (1/cosx)=2cosx (sinx+1)/cosx =2cosx ...

maths - by equating the coefficients of sin x and cos x , or otherwise, find ...

trig - how does this work? (Sin2x+cos2x+2sin²x)/(sinx+cosx) = (sinx+cosx