Find all degree solutions for the following. cos 20 = 0 e = 45° + 180°k or 135° + 180°k e = 45° + 60°k or 135° + 60°k e = 30° + 60°k or 90° + 60°k e = 90° + 180° k e = 30° + 180°k or 90° + 180°k

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