Roboguru

Perhatikan gambar! Besar sudut BAC adalah...

Perhatikan gambar!

Besar sudut BAC adalah...

  1. 30 to the power of o

  2. 40 to the power of o

  3. 50 to the power of o

  4. 90 to the power of o

Jawaban:

angle B A C plus angle A C B equals 140 to the power of o  y plus 10 plus 2 y plus 10 space equals 140 to the power of o  3 y plus 20 equals 140 to the power of 0  3 y equals 120 to the power of o  y equals 40 to the power of o  J a d i comma space angle B A C equals y plus 10 equals 40 plus 10 equals 50 to the power of o

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