Aboat is sailing about 400 feet from the cliff at the shore of a lake. a sailor on the boat uses a device to measure the angle of elevation between the lake level and the top of the cliff. he draws a diagram like the one below. using his measurements, find the height of the cliff to the nearest thousandth.

Note that tan 15 deg = h / (400 ft)

tan 15 deg = 0.2679, so  (400 ft)(0.2679) = 107 ft

The height of the cliff is approx 107 ft.  I don't think it reasonable to try to specify the height to the nearest thousandth of a foot.

Formula for the area of a regular polygon. ... The number of square units it takes to completely fill a regular polygon. Four different ways to calculate the area are given, with a formula for each. Try this Drag ... Alter the number of sides. ... If you know the apothem, or inradius, (the perpendicular distance from center to a side.

Missing: 6.8 ‎| Must include: 6.8

Step-by-step explanation: