show that f(x)= tan x is strictly increasing in (o, pi /2 ) - Maths - Application of Derivatives

Question

show that f(x)= tan x is strictly increasing in (o, pi /2 )

Raghav · Accepted Answer

f(x) = tanx implies f'(x) = sec2x>0 in
interval(0,π/2) Hence, tanx is strictly increasing in (0,π/2)