Sin^2x/cos^2 + sinxcscx = sec^2x identify it, explain so i know how you did it,

let s=sin(x), c=cos(x)

s^2/c^2+s*csc(x)

=s^2/c^2+s/s (csc(x) = 1/sin(x), by definition of csc(x) )

=s^2/c^2+1

=s^2/c^2 + c^2/c^2

=(s^2+c^2)/c^2 (s^2+c^2=1, an identity)

=1/c^2

= sec^2(x) (by definition of sec(x) = 1/cos(x) )

to the risk of sounding redundant.

accelerated heartbeat, raise in blood pressure, slow in digestion, raise in blood sugar and perspiration. (myers' psychology for ap 2nd edition pg 87)