can someone help me prove trig identities

[ineedhelp125]

Im having trouble with : csc[sup:3ggivzag]2[/sup:3ggivzag]x(cos[sup:3ggivzag]2[/sup:3ggivzag]x-1)=-1

Can someone tell me the steps or something. :mrgreen:

 

[pka]

\(\displaystyle \csc ^2 (x) = \frac{1}{{\sin ^2 (x)}}\;\& \;\cos ^2 (x) - 1 = - \sin ^2 (x)\)

 

[ineedhelp125]

thanks


i need help again

cot(x) -sec(x) csc(x)=-tan (x)