Answer:
Option D. tan 225° is the correct answer.
Step-by-step explanation:
As we know [tex]tan2A = \frac{2tanA}{1-tanx^{2}A }[/tex]
Given in the question angle A = 112.5°
Hence the formula becomes as
[tex]tan2(112.5)=\frac{2tan( 112.5)}{1-tan^{2}(112.5) }[/tex]
Therefore its a formula of tan2(112.5) = tan 225°
Option D. is the correct answer.
