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Please help. Find determinant using row operation?

Please help. Find determinant using row operation?

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Grade:12

1 Answers

Vikas TU
14149 Points
6 years ago
|A| = [sin^2a + sinacosb – sinasinb – sinbcosb – cos^2b + cos^2a]
    = sin^2a – cos^2a + cos^2aa
    = 1 – cos^2a
    = sin^2(a)

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