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For 18, explain how you got the solutions posted.For 22:x = 0 + 2π*k, which of course becomes 2π*k.x =π + 2π*k
For 18, explain how you got the solutions posted.
For 22:
x = 0 + 2π*k, which of course becomes 2π*k.
x =π + 2π*k
