Answer:
Each step is 30 inches
Step-by-step explanation: One yard is 36 inches. 10 yards is 360 inches.
360 divided by 12 is 30.
1st :The angle of depression 30° = the angle of elevation (from the truck to the height of the building.
2nd :
cos 30° = (adjacent side)/(hypotenuse)
cos 30° = x/100, but cos 30°= (√3)/2
(√3)/2 = x/100 and x = (100√3)/2
and x = (50.√3) = 86.60 m
Answer:54pounds
Step-by-step explanation:63-9=54