Without solving, how do you determine the number of solutions for the equation #costheta=1/sqrt2# in #-2pi<=theta<2pi#?
1 Answer
Jul 4, 2017
4 solutions
Explanation:
Number of solutions: 4
In the interval (- 2pi, 0) there are 2 solutions for
In the interval (0, 2pi), there are 2 solutions.
