|[cos15^(@),sin15^(@)],[sin75^(@),cos75^(@)]|=?

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

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

Evaluate |["cos" 15^(@), "sin"15^(@)],["sin" 75^(@), "cos"75^(@)]|

Evalute |(cos 15^(@) sin 15^(@)),(sin 75^(@) cos 75^(@))|

Evaluate: det[[cos15^(0),sin15^(0)sin75^(0),cos75^(0)]]

Evaluate : |{:(cos15^(@) sin 15^(@) ),(sin 75^(@) cos 75^(@)):}| .

Show that |[cos 15^@ sin 15^@],[sin 75^@ cos 75^@]| =0

Evaulate |{:(cos15^@,sin 15^@),(sin75^@,cos 75^@):}|

Show that |{:(cos 15^@ ,sin 15^@),(sin 75^@,cos 75^@):}|=0

Find values of sin15^(@),cos15^(@),sin75^(@),cos75^(@),tan15^(@),tan75^(@) .