Answer:
(b) 3.8
Step-by-step explanation:
Often, simple relations will help you solve geometry problems. Here, you only need to know that larger angles are opposite longer sides.
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The angle opposite side EF is angle D, which is 75°. That angle is larger than angle F, which is opposite the side marked as having length 3.
This means EF > 3.
There is only one answer choice greater than 3. Choice B is 3.8.
EF ≈ 3.8
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The only "work" is remembering that larger angles are opposite longer sides.
