Trigonometric Proofs

[freckles101]

Prove the following equation:

 

[BigBeachBanana]

Please show what you've tried. I would start by combining the LHS into one common fraction.

 

[freckles101]

Hello,
Thanks for your response, this is where im at, just trying to figure out how I can further manipulate the LHS so it equals the RHS.
Many thanks

 

[freckles101]

Hello,
Thanks for your response, this is where im at, just trying to figure out how I can further manipulate the LHS so it equals the RHS.
Many thanks

I've just realised that I haven't factorised correctly ?

 

[BigBeachBanana]

I've just realised that I haven't factorised correctly ?

Please post the updated version.

 

[pka]

Here are some suggestions
$\dfrac{\sin^2(x)\tan(x)}{\tan(x)+1}=\dfrac{\sin^3(x)}{\sin(x)+\cos(x)}~\&~\dfrac{\cos^2(x)}{\tan(x)+1}=\dfrac{\cos^3(x)}{\sin(x)+\cos(x)}$
Can you factor $\sin^3(x)-\cos^3(x)~?$ SEE HERE
$$$$