Convert (12, -π /2) to the rectangular form

Convert (2, π /6) to the rectangular form

Convert (12, π /6) to the rectangular form

 Convert (4,11 π /6) to the rectangular form

Convert (5,4/3) to the rectangular form

Convert (12, π /2) to the rectangular form

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Convert (3√2, -3π/4) to the rectangular form

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Convert (2, π) to the rectangular form