Step-by-step explanation:
91minutes
13 x = 91 minutes
Arctan (√3 /3) = 30°. = π/6 rad
That is the value searched, in degrees and radians.
You can verifiy that tan(30°) = sin(30°) / cos(30°) = [1/2] / [√3/2] = 1/√3 = √3 / 3
The answer is :
1. Yes,
2. Yes,
3. No,
4. Yes,
