EliyahG77516 EliyahG77516

28-10-2022
Mathematics

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BA61°830°СFind the side length of BC. Round your answers to the nearest whole number

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MalerieZ379589 MalerieZ379589

28-10-2022

The sum of the internal angles of any triangle is equal to 180, therefore :

A + B + C = 180

61 + B + 30 = 180

Solving for B:

B = 180 - 30 - 61 = 89

Using law of sines:

BC/sin(61) = 8/sin(89)

Solving for BC:

BC = (8*sin(61))/sin(89) = 6.99802349 ≈ 7

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