Question

Question #12397

Answer 1

See below

Explanation:

graph{1/2 tan(pi*x/180) [-10, 80, -1, 3]}
The range of `1/2tan x` in interval from `10^o` to `60^0`
is from `1/2tan 10^o~~0.088` to `1/2tan 60^o=sqrt(3)~~0.866`