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13-05-2020
Mathematics

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Find m∠B.

Note that M∠B is acute. Round to the nearest degree.

Find mB Note that MB is acute Round to the nearest degree class=

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ronhagrid310 ronhagrid310

13-05-2020

Answer:

Using the theorem of sine

BC/sinA = AC/sinB

=> 11/sin(80) = 8/sinB

=> sinB =8 x sin(80)/11 = 0.716

=> B = arcsin(0.716) = ~45.7 deg

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