Q6 of 256 Page 6

Evaluate :


Expanding along the first row



⇒ |A| = 0(0 – sinβ(–sinβ) ) –sinα(–sinα× 0 – sinβ cosα ) – cosα((–sinα)(–sinβ) – 0× cosα )


|A| = 0 + sinα sinβ cosα – cosα sinα sinβ


|A| = 0


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