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Naming the sides in a right angled triangle - class-XI

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Multiple Choice

Value of $ \displaystyle \sin 45^{\circ} \cos 45 \left ( \tan 45^{\circ}+\cot 45^{\circ} \right )^{2}   $  is 

  1. $1$
  2. $2$
  3. $3$
  4. $4$
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