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Grade: 12
        Let t1 t2 t3 be three distinct point on circle |t| = 1 if x, y, z be the argument of t1 t2 t3 respectively then maximum value of cos(x-y) +cos(y-z) + cos(z-x)
2 years ago

Answers : (1)

mycroft holmes
272 Points
							
Bringing the 3 points infinitesimally close together, we can make the expression as close to 3 as we please. So the supremum is 3
2 years ago
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