3 years ago

In △ABC, m∠A = 75° and m∠C = 20°, What is m⁢∠⁡⁣B?

Mathematics

2 answers:

Vladimir [108]3 years ago

5 0

Answer:

30 degree ok please make me brainliest

MariettaO [177]3 years ago

3 0

Answer:

∠ B = 85°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180° , that is

∠ A + ∠ B + ∠ C = 180° , substitute values

75° + ∠ B + 20° = 180°

∠ B + 95° = 180° ( subtract 95° from both sides )

∠ B = 85°

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