If tan α = 1/7, tan β = 1/3, then tan(α + β) = ? (1) 10 (2) 15 (3) 23 (4) None of these

Question

If tan α = 1/7, tan β = 1/3, then tan(α + β) = ?

(1) 10

(2) 15

(3) 23

(4) of these

Answer 1

Correct option (4) of these

Explanation :