# How do you determine if sec60^circ<sec75^circ is true or false?

Jun 25, 2018

Between 0 to 90, secant is increasing function as can be seen clearly (or use calculus), and we know that for a function f(x), if ${x}_{1} > {x}_{2} \Rightarrow f \left({x}_{1}\right) > f \left({x}_{2}\right)$ then f(x) must be an increasing function.