Question

Show that
$\frac{ \sin\beta - 2 {sin }^{3} \beta }{2 { \cos }^{3} \beta - \cos\beta }$
It's okay if answer is late​

Answer 1

You didnt include the RHS but let me see if i can simplify


FINAL ANSWER = tanB

Please refer the attachment below :

Equations used


1 = sinsquared + cossquared
tan theta = sintheta / costheta


Hope this helps ;)