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dsp73
4 years ago
15

Solve number 20traingle ABC with C=90 slove for the missing partPLEASE HELP!!​

Mathematics
1 answer:
vovangra [49]4 years ago
5 0

Answer:

A ≈ 69.5°

Step-by-step explanation:

Given the triangle is right use the cosine ratio to find A

cosA = \frac{adjacent}{hypotenuse} = \frac{AC}{AB} = \frac{2.7}{7.7}, thus

A = cos^{-1} ( \frac{2.7}{7.7} ) ≈ 69.5° ( to 1 dec. place )

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