7.7 Practice C solutions

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Use a calculator to approximate the measure of
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Solve the right triangle. Round decimal answers to the nearest tenth.
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lA be an acute angle in a right triangle. Approximate the measure of
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23. sinl : 1.0 4n' 24. sinl :0 0
21, tanA: r.o i-{5 ,vo 22. cos,4 : o qd
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Practice C contnued .i* .r r,. " IlForusewithpages4134Sg ,,ltrr' tt(
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25. Golf fhe angle of depression from the tee box to
the green is 10o on apar 3,185 yard hole. How
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much higher is the tee box than the green?
Round io the nearest yard. '),'t . ,l
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Ramp You are designing
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185 yd
Not drawn to scale
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a ramp where the
vertical
ramp angle
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horizontal.distance
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In Exercises 28-3O, use the following information.
Fireworks You are watching
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.
27. Bridge A surveyor needs to find the distance
BC across a lake as part of a project to build a
bridge. The distance from point I to point B
is 325 feet. The measurement of angle A is 42"
and the measurement of angle B is 110".
What is the distance BC across the lake to the
foot?. , i
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rise d
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horizontal distance is twice as long as the
vertical rise. What will be the ramp angle
to the nearest tenth of a degree?
nearest
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It
a fireworks display where you are standing 290 feetbehind
the launch pad. The launch tubes are aimed directly away from you at an angle of 65" with
the ground. The angle of elevation for you to see the fireworks is 40".
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To the nearest foot, what is the horizontal distance from the launch pad to the
ignition point of the fireworks?
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29.
To the nearest foot, what is the height of the fireworks when they ignite?
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What is the measure of anele,4?
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