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Which of the following is possible in De...

Which of the following is possible in `DeltaABC`?

A

`cosA+cosB+cosC=3/2`

B

`cosAcosBcosC=0`

C

`sinA+sinB+sinC=sqrt2+1`

D

`sinAsinBsinC=-3/8`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
(1) `A = B=C=pi/3`
(2) Right angled triangle
(3) `A=B=pi/4,C=pi/2`
(4) Not possible as`sinA,sinB,sinCgt0`
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