In a triangle ABC, with usual notations, if b = 3 , c = 1, A = 30^ then angle B is

MHT CET 2022 Mathematics question

Not in JEE syllabus

In a triangle ABC, with usual notations, if , , then angle B is

Answer: (D)

By the cosine rule, , so . Equal sides are opposite equal angles, so . Then , option (D). Check with the sine

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Question ID VK-094463