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Mathematics, 07.05.2021 17:20 lulustar13

Given triangle ABC, which equation could be used to find the measure of angle B? \cos \: m \: angle \: b = \frac{ \sqrt{5} }{5}
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\sin \: m \: angle \: b = \frac{ \sqrt{5} }{5}
\cos \: m \: angle \: b = \frac{ \sqrt{5} }{2}
\sin \: m \: angle \: b = \frac{ \sqrt[2]{5} {} }{5}
Given triangle ABC, which equation could be used to find the measure of angle B? ​

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Given triangle ABC, which equation could be used to find the measure of angle B?


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