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Mathematics, 17.08.2021 15:30 xxxanitaxxx

Can someone help me??? Which of the following is equal to 1/2 or -1/2? Check all that apply.

Sin (7π/6)

Sin (4π/3)

Cos (5π/3)

Cos (π/6)

Cos (5π/6)

Sin (5π/6)

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