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Question Number 133347 by rs4089 last updated on 21/Feb/21

for a triangle ABC ...  find minimum value of   CosA.CosB.CosC

$${for}\:{a}\:{triangle}\:{ABC}\:... \\ $$$${find}\:{minimum}\:{value}\:{of}\: \\ $$$${CosA}.{CosB}.{CosC} \\ $$

Commented by mr W last updated on 21/Feb/21

i think there is no minimum,  minimum →−1

$${i}\:{think}\:{there}\:{is}\:{no}\:{minimum}, \\ $$$${minimum}\:\rightarrow−\mathrm{1} \\ $$

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