In triangle ABC, a=7, b=7 and c=9, then the value of angle $\beta$ is

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In triangle ABC, a=7, b=7 and c=9, then the value of angle $\beta$ is

E

Editor

Sep 18, 2022

In triangle ABC, a=7, b=7 and c=9, then the value of angle $\beta$ is

Difficulty: Easy

A:

50^{\circ}

B:

34^{\circ}15'

C:

111^{\circ}30'

D:

80^{\circ}

ID: 63273db9ca83163ac3a10947