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If A+B+C= pi, show that the determinant in the attached image is equal to zero by using properties

Govardan Gopakumar , 8 Years ago
Grade 12
anser 3 Answers
Riddhish Bhalodia

Last Activity: 8 Years ago

in picture
512-2174_Photo on 19-05-16 at 11.27 AM.jpg

mycroft holmes

Last Activity: 8 Years ago

Write the given determinant as 
 
and note that AT = -A (i.e. the matrix is a skew symmetric matrix) and hence the determinant is zero.
 
i.e. 

Rishi Sharma

Last Activity: 4 Years ago

645-1241_WhatsApp Image 2020-08-10 at 10.35.46 PM.jpeg
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