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

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

f o r a t r i a n g l e A B C \dots

f i n d m i n i m u m v a l u e o f

C o s A . C o s B . C o s C

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

i t h i n k t h e r e i s n o m i n i m u m,

m i n i m u m \to - 1

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