If i A- cos- sin- -sin- cos- - then verify that A- A-Iii A- sin- cos- -cos- sin- - then verify that A- A-I

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Complex Numbers

If i A=[[ cos...

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If (i) , then verify that

(ii) , then verify that

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A = [\begin{matrix} cos α & sin α - sin α & cos α \end{matrix}]

A^{'} A = I

A = [\begin{matrix} sin α & cos α - cos α & sin α \end{matrix}]

A^{'} A = I

If $A = [\begin{matrix} s i n α & c o s α - c o s α & s i n α \end{matrix}]$ , then verify that A'A=I.

A = [\begin{matrix} \sin α & \cos α \\ - \cos α & \sin α \end{matrix}]

For $(i) A = [\begin{matrix} c o s α & s i n α - s i n α & c o s α \end{matrix}]$ , verify that A'A=I.

For (ii) $A = [\begin{matrix} s i n α & c o s α - c o s α & s i n α \end{matrix}]$ , verify that A'A=I.

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