Here's the question you clicked on:
elmo1594
what do you do to evaluate sec -60 degrees
sec(-60)=sec60 =2 as sec(-x)=secx
so the answer is 2 right
you can add to it sec(60) = 1/cos(60) sec(60) = 1/(1/2) sec(60) = (1/1)/(1/2) sec(60) = (1/1)*(2/1) sec(60) = 2 So that's how matricked got the answer of 2