# How do you use the half angle identity to find cos 105?

##### 1 Answer

Nov 6, 2014

**Half Angle Formula**

First, since

by

I hope that this was helpful.

Nov 6, 2014

**Half Angle Formula**

First, since

by

I hope that this was helpful.

18655 views
around the world

You can reuse this answer

Creative Commons License

Creative Commons License