Question

The value of \[ \frac{1-\tan^2 45^\circ}{1+\tan^2 45^\circ} \] is

• A. 4
• B. 2
• C. 1
• D. 0

Hint:

Important standard values: \[ \sin45^\circ=\cos45^\circ=\frac{1}{\sqrt2}, \qquad \boxed{\tan45^\circ=1.} \]

Answer 1

The Correct Option is D