`{:(,"स्तम्भ 'अ'",,,"स्तम्भ 'ब'"),((i),sin((pi)/(2)-x),(2019),(a),(2tan x)/(1-tan^(2)x)),((ii),cos 2x,(2019),(b),(1-tan theta)/(1+tan theta)),((iii),tan 2x,(2019),(c ),(1+tan theta)/(1-tan theta)),((iv),cos((pi)/(4)+theta),(2019),(d),(1-tan^(2)x)/(1+tan^(2)x)),((v),tan((pi)/(4)+theta),(2019),(e ),cos x):}`

Answer

`(i)to (e ), (ii)to(d), (iii)to(a), (iv)to (b), (v)to(c )`