Question

Using a scientific calculator or graphing calculator find the inverse tangent of the ratio. Round to the nearest degree.

StartFraction 3 Over 1 EndFraction
a.
71°
b.
19°
c.
72°
d.
18°

Answer 1

The inverse tangent of 3/1 can be found using a scientific calculator or graphing calculator by taking the arctan(3/1), which gives the angle in radians. To convert to degrees, we can multiply by 180/π. Rounding to the nearest degree gives:

arctan(3/1) = 71.57° ≈ 72°

Therefore, the answer is option C: 72°.