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Unformatted text preview: A security camera in a neighborhood bank is mounted on a wall 10 feet
above the ﬂoor. What angle of depression should be used if the camera is
to be directed to a spot 7 feet above the ﬂoor and 13 feet from the wall? lib-ll.) f Find the six trigonometric functions of the angle a in her ﬁgure below.
I f; s c 9 r: G ﬁne: Lth C5926": Sac Q = ' J ?) ‘ J 7‘ Meteorologists find the height of a cloud using an instrument called a ceilemeter. A
ceilometer consists of a light. projecter that directs a vertical light beam up to the
cloud and a light detecter that scans the cloud to detect the light. beam. See
Figure 1,3(51). On. December '1, 2064, at Midway Airport in Chicage, a ceilemeter
with a base of 300 feet was employed to find the height 0-1" the cloud cover. If the
angle of elevation of the light detector is 75¢, what is the height of the cloud cover?
Round the answer to the nearest foot. Adt‘n‘ning the top of the Board IDfTI‘adﬁ building in Chicago is a statue of Ceres. the
Roman gwddess of wheat. From street level, two abserva‘tions are taken 400 feet
from the center at the building. The angle of elevation to the. base of the statue l’(_)uncl to be 55.1”: the angle of elevation to the top of the statue is 56.5”. See Figure
l4(a_}. What is the height of the statue? Round t 6 answer to the Itcarest that. EMBAS:_EE
W2: l11070 iov’lgé”;
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This note was uploaded on 01/16/2012 for the course MATH 127 taught by Professor Blisinhestiyas during the Fall '11 term at Truckee Meadows Community College.
- Fall '11