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A=[[sin15^(@),cos15^(@)],[-sin75^(@),cos...

A=[[sin15^(@),cos15^(@)],[-sin75^(@),cos75^(@)]]quad [" them "],[" evaluat "1Al]

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cos15^(@)-cos75^(@)=

4sin75^@-3cos15^@=

Evaluate det[[cos15^(@),sin15^(@)sin75^(@),cos75^(@)]]

Cos15^(@) - Cos75^(@) =

If A=[[sin15^@ cos15^@],[-sin75^@ cos75^@]] , then evaluate |A|.

sin75^(@)-sin15^(@)=cos105^(@)+cos15^(@)

cos 15^(@) - cos 75^(@) =

Evaluate: sin 15^(@)cos 15^(@)-cos 75^(@)sin75^(@)

Evaluate |(cos 15^(@),sin15^(@)),(sin75^(@),cos75^(@))|

Evaluate: |(cos15^@,sin15^@),(sin75^@,cos75^@)|