3 Type the correct answer in the box. Round your answer to the nearest integer.
B
D
30
35
А
С
In the figure, if m_ABD = 120°, then m_ADC =
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132

Step-by-step explanation:

using sinus

m<ADB = ∅

sin 120/35 = sin ∅/30

((√3)/2)/35 = sin ∅/30

(√3)/70 = sin ∅/30

sin ∅ = (30√3)/70

sin ∅ = (3/7)(√3)

∅ = sin-¹ (3/7)(√3) (using calculator)

∅ = 47.928°

∅ ≈ 48°

then ADC = 180 - ADB = 180 - 48 = 132°

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step-by-step explanation:

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