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2 Jul 2022

Proof that cosA+cosB+cosC<=3/2

cosA+cosB+cosC<=3/2

at July 02, 2022

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Labels: Class 11, Trigonometry

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If a-b=3,a+b+x=2, then the value of (a-b)[x^3-2ax^2+a^2x-(a+b)b^2] is

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