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babunello [35]
2 years ago
9

Find cos(β) in the triangle.

Mathematics
1 answer:
svetlana [45]2 years ago
8 0

90°+b+b =180

90°+ 2b=180

2b=180-90

2b= 90

<u>2</u><u>b</u><u>=</u><u>9</u><u>0</u>

<u>2</u> = 2

b=45°

ave tried I don't know if its correct

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