81 feet
9 x 11 = 99
180 - 99 = 81
Pretend y is the angle of depression.
Tan y= opposite/ adjacent
Tan y = 16.2/ 48.3
Y= tan-1( 16.2/ 48.3)
Angle = 18.5416
The answer is 8
Hope that helps!!
.6 x 10^-3 (Move the decimal in a multiple of 3 and don't forget it's 6 tenths not the whole number 6) In scientific notation this would be;
(the whole number)6 x 10^-4