Q2: If , then for what value of a is A an identity matrix?

Answered Same DayDec 26, 2021

Answer To: Q2: If , then for what value of a is A an identity matrix?

David answered on Dec 26 2021

120 Votes

Solution 2: Given that
A=
cos sin
sin cos
 
 
 
 
 
.If A is identity matrix i.e.
cos sin
sin cos
 
 
 
 
 
=
1 0
0 1
 
 
 
this gives 2 ,n  n= 0, 1, 2,  

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Q2: If , then for what value of a is A an identity matrix?

Answer To: Q2: If , then for what value of a is A an identity matrix?

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