Answer:
tan(99°)
Step-by-step explanation:
It looks like you may have attempted to write the sum of angles formula for tangent. That would be ...
tan(α+β) = (tan(α) +tan(β))/(1 -tan(α)tan(β)) . . . . . . . parentheses are required
Your expression seems to match this for α = 44° and β = 55°. So, the equivalent is ...
tan(44°+55°) = tan(99°)
