Further Trig Question, Help!!!! (1 Viewer)

[chris_power_96]

Using (1-tanx)/1+tanx)=tan(45-x)

Find tan 22(x/2)

 

[chris_power_96]

I meant tan 22.5

 

[Carrotsticks]

Let x=22.5, then when you re-arrange terms, you will get a quadratic in terms of tan22.5.

Solve the quadratic, and you will get 2 solutions, one positive and one negative. Since tan22.5 > 0, we can conclude that the solution is the positive one.