Question 894448
your equation is:


{{{tan(t) = sin(t) / sqrt(1-sin^2(t))}}}


since 1 - sin^2(t) is equal to cos^2(t), this equation becomes:


{{{tan(t) = sin(t) / sqrt(cos^2(t))}}}


since sqrt(cos^2(t)) = cos(t), this equation becomes:


{{{tan(t) = sin(t) / cos(t)}}}


since sin(t) / cos(t) = tan(t), this equation becomes:


{{{tan(t) = tan(t)}}}


i think that's all you need.