trigonometry
posted by lisa on .
tanx/2=tanx/secx+1

Is it
tan (x/2) = tanx/secx + 1 ??
tan (x/2) = tanx/(secx +1) ??
(tanx)/2 = tanx/secx + 1 ?? > the way you typed
are we solving the equation, or is it supposed to be an identity?
Can you see why brackets are essential?