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The multiplicative inverse of A =open square brackets table row cell cos invisible function application theta end cell cell negative sin invisible function application theta end cell row cell sin invisible function application theta end cell cell cos invisible function application theta end cell end table close square bracketsis

  1. open square brackets table row cell negative cos invisible function application theta end cell cell sin invisible function application theta end cell row cell negative sin invisible function application theta end cell cell negative cos invisible function application theta end cell end table close square brackets    
  2. open square brackets table row cell cos invisible function application theta end cell cell sin invisible function application theta end cell row cell negative sin invisible function application theta end cell cell cos invisible function application theta end cell end table close square brackets    
  3. open square brackets table row cell negative cos invisible function application theta end cell cell negative sin invisible function application theta end cell row cell sin invisible function application theta end cell cell negative cos invisible function application theta end cell end table close square brackets    
  4. open square brackets table row cell cos invisible function application theta end cell cell sin invisible function application theta end cell row cell sin invisible function application theta end cell cell negative cos invisible function application theta end cell end table close square brackets    

The correct answer is: open square brackets table row cell cos invisible function application theta end cell cell sin invisible function application theta end cell row cell negative sin invisible function application theta end cell cell cos invisible function application theta end cell end table close square brackets


    |A| = cos2 theta+ sin2 theta = 1
    Adj. A = open square brackets table row cell cos invisible function application theta end cell cell sin invisible function application theta end cell row cell negative sin invisible function application theta end cell cell cos invisible function application theta end cell end table close square brackets
    A–1 =fraction numerator A d j. A over denominator vertical line A vertical line end fraction= open square brackets table row cell cos invisible function application theta end cell cell sin invisible function application theta end cell row cell negative sin invisible function application theta end cell cell cos invisible function application theta end cell end table close square brackets

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