Question

What is answer this question
​

Answer 1

Answer:

1-tan^245/1+tan^245

=1-1^2/1+1^2

=0/2

=0

Answer 2

Answer:

$\frac{1 - {tan}^{2}45 }{1 + {tan}^{2} 45} \\ \\ = \frac{1 - {(1)}^{2} }{1 + {(1)}^{2} } \\ \\ = \frac{1 - 1}{1 + 1} \\ \\ = \frac{0}{2} \\ \\ = 0$

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