Answer :

amna04352

Answer:

CB = 1.338r

Where r is the radius

Step-by-step explanation:

Angle ACB = 90 - 42 = 48

Angle at A = 180 - 2(48) = 84

CB² = r² + r² - 2(r)(r)cos(84)

CB² = 1.790943073r²

CB = 1.338r

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