Download Find sin J, cos J, tan J, sin L, cos L, and tan L.

8-4 Trigonometry
Find sin J, cos J, tan J, sin L, cos L, and tan L.
Express each ratio as a fraction and as a
decimal to the nearest hundredth.
Use a special right triangle to express each
trigonometric ratio as a fraction and as a
decimal to the nearest hundredth.
tan
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sin
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tan
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1
Find x . Round to the nearest tenth.
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30.7
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Use a special right triangle to express each
trigonometric ratio as a fraction and as a
decimal to the nearest hundredth.
tan
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23.2
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17.7
in 1
GYMNASTICS The springboard that Eric usesPage
his gymnastics class has 6-inch coils and forms an
angle of
with the base. About how long is the
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8-4 Trigonometry
17.7
GYMNASTICS The springboard that Eric uses in
his gymnastics class has 6-inch coils and forms an
angle of
with the base. About how long is the
springboard?
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Solve each right triangle. Round side measures
to the nearest tenth and angle measures to the
nearest degree.
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about 24 in.
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HF = 17.6; GH = 20.8; m G = 58
&&66722/6Use a calculator to find the
measure of T to the nearest tenth.
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LK = 20.5; m J = 69; m K = 21
Find x and y .
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x = 6; y = 12
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Solve each right triangle. Round side measures
to the nearest tenth and angle measures to the
nearest
degree.
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;y =7
Determine whether each set of numbers can be
the measures of the sides of a triangle. If so,
classify the triangle as acute, obtuse, or right.
Justify your answer.
11, 12, 24
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No; 24 > 12+11
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8-4 Trigonometry
;y =7
Determine whether each set of numbers can be
the measures of the sides of a triangle. If so,
classify the triangle as acute, obtuse, or right.
Justify your answer.
11, 12, 24
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No; 24 > 12+11
18, 24, 30
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Yes; right
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Yes; acute
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