31°
24
x
Iden,fythe90°angle.
Iden,fythereferenceangle.
Usetrigonometrytosolveforx.
21
33°
x
Iden,fythe90°angle.
Iden,fythereferenceangle.
Usetrigonometrytosolveforx.
16
15°
Iden,fythe90°angle.
Iden,fythereferenceangle.
Usetrigonometrytosolveforx.
x
Identify the 90° angle.
Identify the reference angle.
Use trigonometry to solve for x.
16
x
12
Sketch RIGHT triangle ABC.
Angle A=90°
Angle B=61°
Length of AC=40
Find the length of BC.
Sketch RIGHT triangle ABC.
Angle A=90°
Angle B=49°
Length of AB=55
Find the length of AC.
Sketch RIGHT triangle ABC.
Angle A=90°
Angle B=27°
Length of BC=104
Find the length of AB.
Sketch RIGHT triangle ABC.
Angle A=90°
Length of BC=75
Length of AB=34
Find angle B.
Sketch RIGHT triangle ABC.
Angle B=90°
Length of BC=34
Length of AB=37
Find angle A.
Sketch RIGHT triangle ABC.
Angle B=90°
Length of AC=26
Length of AB=20
Find angle C.
A pilot is traveling at a height of 30,000 feet
above level ground. She looks down at an
angle of depression of 6° and spots the
runway. As measured along the ground,
how many miles away is she from the
runway? Round to the nearest tenth of a
mile.
A man flies a
kite with 100
feet of string.
The angle of
elevation from
the ground to
the string is
52°. How high
off the ground
is the kite.
A ramp is needed to allow vehicles to
climb a 2 foot wall. The angle of
elevation in order for the vehicles to
safely go up must be 30° or less, and
the longest ramp available is 5 feet
long. Can this ramp be used safely??
Yes or No?
A farmer is building a chicken
coop. The door where the
chickens enter is 3ft above the
ground. The ramp will be set at a
angle of elevation with the ground
of 15°. How long will the ramp
need to be?
A ladder is leaning against a
house at an angle of 15° (with the
house). The base of the ladder is
9 feet from the house. How long
is the ladder?
Madison County
Firemen are
called to a house
fire and need to
get to the 2nd
story window
which is 27 feet
from the ground.
Because of the
bushes in the
front yard, they
have to put the
ladder at least
15 feet from the
house. How long
does the ladder
need to be?