In Exercises 1 4, use a graphing utility to approximate the solutions of the equation in the interval 0, 2) 1 cos(x 4) cos(x 4) 1 2 tan(x ) cos(x 2) 0 3 sin(x 2) cos2 x 0 4 cos(x 2) sin2 x 0 ...

1 cosx 4 cosx 4 1 Graph y 1 cosx 4 co ...

In Exercises 1-4, use a graphing utility to approximate the solutions of the equation in the interval

Question:

In Exercises 1-4, use a graphing utility to approximate the solutions of the equation in the interval [0, 2π).
1. cos(x + π / 4) + cos(x - π / 4) = 1
2. tan(x + π) - cos(x + π / 2) = 0
3. sin(x + π / 2) + cos2 x = 0
4. cos(x - π / 2) - sin2 x = 0