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    So I have SecxTanx (multiplide together) - Secx^2 all divided by SecxTanx + Secx^2

    I need to get this in the form Sinx -1 divided by Sin x + 1

    I kinda am struggling, Im getting it to Sinx^2 on one side of the equation, but on the other side I cant rearrange it.
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     \frac{sec(x)*tan(x) - sec^2(x)}{sec(x)*tan(x) + sec^2(x)}

    (Cancel sec(x) from top and bottom-formally factorise it and cancel)

      = \frac{tan(x) - sec(x)}{tan(x) + sec(x)}

    (tan(x)=sin(x)/cos(x) and sec(x)=1/cos(x)) (Cancel cos(x))

     = \frac{\frac{sin(x)-1}{cos(x)}}{\frac{sin(x)+1}{cos(  x)}} = \frac{sin(x)-1}{sin(x)+1}
 
 
 
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