ysabellalove727 ysabellalove727

19-04-2022
Mathematics

contestada

Find fRound the answer to the nearest tenth.
A. 54.5°
B. 57.2°
C. 90.0°
D. 109.2°

Find fRound the answer to the nearest tenth A 545 B 572 C 900 D 1092 class=

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toriarenaee toriarenaee

19-04-2022

D. 109.2
A triangle equals 180° and angle F is an obtuse angle therefore it can’t be 90° or lower.
180° - 109.2° = 70.8°
The smaller angles would each equal 35.4°

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jsimpson11000 jsimpson11000

19-04-2022

Answer:

109.2 degrees

Step-by-step explanation:

Use the cos law to find angle F

3.1^2 = 2^2 + 1.8^2 - 2 (2)(1.8) cos F

shows cos f = -.329

arc cos( - .329) = angle F =109.2 degrees

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