Teaching UP TGT Mock Test Series 2025 Mathematics Trigonometry Properties of Triangles

In a ΔABC, a + b = 3(1 + √3) cm and a - b = 3(1 - √3) cm. If ∠A is 30°, then what is the measure of ∠B ?

1
120°
2
90°
3
75°
4
60°
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