Jawaban:
BAC = 180° - (ABC + BCA)
ABC = 75°
BCA = 180° - (11x + 9°)
Untuk itu, kita harus mencari nilai x terlebih dahulu
9x = 180 - 75° - 6°
9x = 99
x = 11°
BCA = 180° - (11x - 9)
BCA = 180° - (121 - 9)
BCA = 180° - 112
BCA = 68°
BAC = 180° - 68° - 75°
BAC = 180° - 143°
BAC = 37°
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Jawaban:
BAC = 180° - (ABC + BCA)
ABC = 75°
BCA = 180° - (11x + 9°)
Untuk itu, kita harus mencari nilai x terlebih dahulu
9x = 180 - 75° - 6°
9x = 99
x = 11°
BCA = 180° - (11x - 9)
BCA = 180° - (121 - 9)
BCA = 180° - 112
BCA = 68°
BAC = 180° - 68° - 75°
BAC = 180° - 143°
BAC = 37°
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