Which equation can be solved to find one of the missing side lengths in the triangle? Expand Image
A
cosine of open paren 60 degrees close paren is equal to A over 12B
cosine of open paren 60 degrees close paren is equal to 12 over AC
cosine of open paren 60 degrees close paren is equal to b over AD
cosine of open paren 60 degrees close paren is equal to 12 over b