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20 July, 09:19

Find all solutions for a triangle with A = 40°, B = 60°, and c = 20.

a. C = 80°; a = 15.3; b = 17.6

C = 80°; a = 13.1: b = 17.6

b. C = 70°; a = 13.1; b = 14.5

d. no solution

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  1. 20 July, 13:11
    0
    Answer:C

    Step-by-step explanation:

    180 - (60+40) = 80°

    C=80°

    20/sin80. = a/sin40

    a = (20sin40) : sin80

    =13.1
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