Question

3) In ∆ ABC l A = 75°, B = 48°,l C = ?​

Answer 1

Answer:

angle C = 57°

Step-by-step explanation:

Angle A + angleB + Angle C = 180° ( angle sum property of triangles)

75°+48°+ angle C = 180°

123° + angle C = 180°

angle C = 180°+123°

angle C = 57°

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Answer 2

Step-by-step explanation:

Sum of all angels of triangle is 180°

Thus,

∠A + ∠B + ∠C = 180°

75° + 48° + ∠C = 180°

123° + ∠C = 180°

∠C = 180° - 123°

∠C = 57°