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zvonat [6]
3 years ago
7

Need help on questions 5-8 with work and answers plz i will really be very greatful

Mathematics
1 answer:
Leya [2.2K]3 years ago
8 0
Im not sure cuz i learned this for long time ago
but i think 5 is 1
and 7 might be2
i have no idea for 8
im sorry :/
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Based on the diagram shown, find θ to the nearest degree.
sattari [20]

Answer:

  θ = 38°

Step-by-step explanation:

The lower right triangle is congruent to the upper left triangle, so we have θ and 20° being the two acute angles in the triangle. The law of sines tells you ...

  sin(θ)/9 = sin(20°)/5

  sin(θ) = (9/5)sin(20°)

  θ = arcsin(9/5·sin(20°)) ≈ 38°

___

Another solution to the triangle is θ = 180° -38° = 142°. The diagram clearly shows θ as an acute angle, so we take this second solution to be extraneous.

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3 years ago
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artcher [175]

Answer:

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3 years ago
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zhuklara [117]
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3 years ago
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blagie [28]
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