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In triangle ABC, if cotAcotBcotC>0, then the triangle is (A) acute angled . (B) right angled (C) obtuse angled. (D) does not exist

In triangle ABC, if cotAcotBcotC>0, then the triangle is 
(A)  acute angled .    (B)  right angled
(C)  obtuse angled.    (D)  does not exist 

Grade:

1 Answers

Parth
15 Points
5 years ago
A) acute angle because if triangle is obtused it cotA.cotB.cotC

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