What is the measure of angle B in the figure below?

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asked May 20, 2018 34.6k views

2 Answers

Janis T · Answer 1 · 2018-05-26T01:24:26+0000

cos B = adjacent / hypotenuse

cos B = AB / BC

cos B = 3 / [ 3 * sqrt(2) ]

cos B = 1/sqrt(2)

cos B = sqrt(2)/2

B = arccos[ sqrt(2)/2 ]

B = 45° <----- this is the answer.

I hope this helps. =)

What is the measure of angle B in the figure below?

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