If A=[{:(0,"tan"(alpha)/(2)),("tan"(alpha)/(2),0):}]and I theidentity matrix of order 2, show that I+A=(I-A)[{:(cosalpha,-sinalpha),(sinalpha,cosalpha):}].

If A=[{:(0,"tan"(alpha)/(2)),("tan"(alpha)/(2),0):}]and I theidentity

1.	If A=[{:(0,"tan"(alpha)/(2)),("tan"(alpha)/(2),0):}]and I theidentity matrix of order 2, show that I+A=(I-A)[{:(cosalpha,-sinalpha),(sinalpha,cosalpha):}].
Answer» ANSWER :`=I+A`

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If A=[{:(0,"tan"(alpha)/(2)),("tan"(alpha)/(2),0):}]and I theidentity matrix of order 2, show that I+A=(I-A)[{:(cosalpha,-sinalpha),(sinalpha,cosalpha):}].

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