I've searched my whole trig book, looked through all my notes but still, I can't seem to figure this problem out! Can anyone give me some help? It would greatly be appreciated!

Show that: 2arctan(1/2)=arctan(4/3)

I've searched my whole trig book, looked through all my notes but still, I can't seem to figure this problem out! Can anyone give me some help? It would greatly be appreciated!

Show that: 2arctan(1/2)=arctan(4/3)

Show that: 2arctan(1/2)=arctan(4/3)

- Martingale
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jinxt wrote:I've searched my whole trig book, looked through all my notes but still, I can't seem to figure this problem out! Can anyone give me some help? It would greatly be appreciated!

Show that: 2arctan(1/2)=arctan(4/3)

if you apply the tangent to both sides and use the formula...