If someone can do this for me.. I'll be grateful.. It's trigonometry. 
 
											 
											Answer:
→The first car ( the nearest to the skyscraper)
90×tan(90-47) = 90×tan(43) = 83,92635775239 m
→→the second car:
90×tan(90-31) = 90×tan(59) = 149,785153411547 m