If Tan α = 2, then the value of (sin α + cos α) ^ 2 / Cos2 α is

If Tan α = 2, then the value of (sin α + cos α) ^ 2 / Cos2 α is

The solution (Sina + COSA) &# 178; / (cos2a) = (Sin & # 178; a + 2sinacosa + cos & # 178; a) / (COS & # 178; a-SiN & # 178; a) - the numerator denominator is divided by cos & # 178 at the same time; a = (Tan & # 178; a + 2tana + 1) / (1-tan & # 178; a) = (4 + 4 + 1) / (1-4) = 9 / (- 3) = - 3