Answer:
9:15
Step-by-step explanation:

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:
Step-by-step explanation:
perimeter of rectangle=2(length+width)
=2(70+65)
=2*135
=270 feet
A right angle is an angle with a measure of 90 degrees.