Answer: 1 2/3 more
Step-by-step explanation:
You could multiply the length that they have given you by 2 and subtract that from the perimeter. That gives you the total length of the missing side and divide it by 2 to get one side.
The solution to the given question is here , sry for having bad handwriting but its solved . If u don’t understand the solution then u can ask me again
By the angle difference formula for sines, we have:

By the angle sum formula for tangents, we have:

.
Rationalizing the denominator gives

as the final answer.