Given that #cos(x) = -3/4#; what is the value of #x#?
Simply the question itself, in my book the answer should be #pi/3# but I can't remember how to solve it.
Or maybe the book is wrong in this case...
Simply the question itself, in my book the answer should be
Or maybe the book is wrong in this case...
1 Answer
Apr 3, 2018
Explanation:
The so-called "special angles" and their corresponding outputs for the cosine function are as follows: