IB Maths AI HL. How to add sin+sin or cos+cos using complex numbers. May 2023 TZ1 Past Paper 1 Q12.

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V1 = 6sin(at + 30°) and V2 = 6sin(at + 90°). V1 + V2 = Vsin(at + q°).
Complex numbers with trigonometry. IB Maths AI HL May 2023 Past Papers.
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