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svet-max [94.6K]
3 years ago
8

Solve the right triangle. Round decimal answers to the nearest tenth.​

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
7 0

Answer:

DE ≈16.1; m∠E ≈ 60.3°; M∠D ≈ 29.7°

Step-by-step explanation:

1) DE

DE² = DF² + EF² = 14² +8² = 196 + 64 = 260

DE =√26 ≈ 16.1

2) m∠E

sin E = DF/DE = 14/16.1 ≈ 0.8682

m∠E = arcsin 0.8682 ≈ 60.3°

3) m∠D

\begin{array}{rcl}m\angle D +  m\angle E + m\angle F & = & 180^{\circ}\\m\angle D +  60.3^{\circ} + 90^{\circ} & = & 180^{\circ}\\m\angle D +  150.3^{\circ} & = & 180^{\circ}\\m\angle D & = & \mathbf{29.7^{\circ}}\\\end{array}

Arada [10]3 years ago
5 0

Answer:

DE = sqrt(8^2+14^2) = ~16.1

E = arctan(14/8) = 60.3

D= arctan(8/14) =29.7

Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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