Answer:
See below
Explanation:
To find pole height
for a right triangle
sin 38 = opposite leg / hypotenuse = height /15 m
sin 38 = height / 15
15 sin 38 = height = 9.2 meters
To find rope DC
Use pythagorean theorem ( you have leg1 = height and leg 2 = 10.7)
DC ^2 = 9.2^2 + 10.7^2
DC = 14.1 m