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chmereaustin1
20.04.2020 •
Mathematics
Please help! I will mark you as brainliest!
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Ответ:
19.8 cm to 3 significant figures.
Step-by-step explanation:
M <B : m < A = 3 : 2.
Also m < A + m < B = 90 degrees
So m < B = 3/5 * 90 = 270/5
= 54 degrees and m < A = 90 - 54 = 36 degrees.
Cos A = 16 / AB
cos 36 = 16 / AB
AB cos 36 = 16
AB = 16 / cos 36
= 19.78 cm.
Ответ:
student is in math club OR debate club
28 students
Step-by-step explanation: