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Grade 11Trigonometry

x=y cos 2pie/3=zcos4pie/3

Profile image of Pradeepcharan Sammeta
11 Years agoGrade 11
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1 Answer

Profile image of Vijay Mukati
11 Years ago
cos 2pi/3 = -1/2 and cos 4pi/3 = ½. Therfore x = -y/2 = z/2.