Evaluate 
After finding determinant we will get,
Sin60° = 
= cos30°
Cos60° =
= sin30°
sin 60° × cos30° + sin30° × cos60°
= 
= 1.
1
Evaluate
After finding determinant we will get,
Sin60° = = cos30°
Cos60° = = sin30°
sin 60° × cos30° + sin30° × cos60°
=
= 1.