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Mathematics, 22.04.2021 03:10 daniel1480

PLEASE HELP What are the phase shift and period for the function y equals two cosine start fraction one over two end fraction left parenthesis theta plus thirty degrees end power right parenthesis minus four question mark (4 points) Phase shift: 30° left, period: 720°
Phase shift: 30° right, period: 330°
Phase shift: 30° right, period: 90°
Phase shift: 30° left, period: 180°

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