Question: In Exercises 1-4, use a graphing utility to approximate the solutions of the equation in the interval [0, 2). 1. cos(x + / 4)

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

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