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  • Choose the correct option and justify your choice 1 - tan ^2 45 ^o / 1+ tan ^2 45 ^o =

2. Choose the correct option and justify your choice :

  (ii)\: \frac{1-\tan^{2}45^{o}}{1+ \tan^{2}45^{o}}=

   (A)\: \tan \: 90^{o}               (B)\: 1            (C) \: \sin 45^{o}             (D) \: 0

Answers (1)

best_answer

The correct option is (D)
\frac{1-\tan^{2}45^{o}}{1+ \tan^{2}45^{o}}=
We know that \tan 45 = 1
So, \frac{1-1}{1+1}=0

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manish

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