The terminal arm of angle #A# goes over the point #(1/5, -1/5)#. What is the exact value of #secA#?
1 Answer
Nov 8, 2016
Explanation:
The definition of
Now consider the following diagram.
We know the point on the terminal arm, so we know the two legs of the imaginary triangle above. However, we need the hypotenuse to find
We know that
Hopefully this helps!