Answer: 1 cm
Explanation:
Use sohcahtoa and because you are want to find bc(which is the opposite) and we have been given the adjacent so we use tan
So tan29=o/1.8
x=1.8 on both sides so you get
1.8xtan29=o
O=0.9977562926
Than round it to whatever it needs to be rounded to so I rounded it to 1 decimal place which gives you 1