Edward A. answered 04/02/21
Tutor
4.9
(17)
High School Whiz Kid Grown Up--I've even tutored my grandchildren
Ty, did you know that the sine function is symmetric?
look at a graph of sin, find the value at 190 degrees, and look for another angle with the same value.
Similarly, cosine is symmetric.
if you have any further questions, please ask.