Question

please help me in this question

Answer 1

Tan60= AC/BC
√3=3000/b
b√3=3000
b=3000/√3
b=1000√3
BC=1000√3

Now tan45°=DC/BC
1=h/1000√3
h=1000√3

x=AC-DC
x=3000-1000√3
x=1000√3(√3-1)