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klemol [59]
3 years ago
9

Just need help with first 3. Please help with the steps as well!

Mathematics
1 answer:
Fudgin [204]3 years ago
8 0
You need to know what type of triangle it is , all your triangles are right angles that means that they are 90° so you just need to subtract the number that its given from 90° ex
the first problem you just have to do this
21° - 90° = 79 °
so x = 79°
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