MCQ
$\frac{1-\tan ^2 45^{\circ}}{1+\tan ^2 45^{\circ}}=\ldots \ldots \ldots .$.
- A$\tan 90^{\circ}$
- B1
- C$\sin 45^{\circ}$
- ✓$0$
✓
Answer
Correct option: D.
$0$
$0$
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