How do you evaluate the expression sec(-30)?
1 Answer
Explanation:
First of all, I as one like to work with positive angles. Since positive angles, when drawn in standard position, are drawn counter clockwise and negative angles are drawn clockwise, we can always find an equivalent negative/positive angle.
We use the equation
Let
Now, our task is to find the value of
I would recommend rationalizing the denominator.
Hopefully this helps!