Question

What is the approximate value of 0 , if tan 0 = 7/9 ? , 38° 52° 74° 16° 63°

Answer 1

              if tanθ (7/9) tells us nothing.
Maybe you mean tanθ = (7/9) ???

If so, θ = tan⁻¹(7/9) = 37.874983651 ≈

38 hope I helped