Swagduck343 Swagduck343

04-08-2018
Mathematics

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What is the measure of angle 8 if AB = 7 and AC = 9? Round to the nearest degree.

What is the measure of angle 8 if AB 7 and AC 9 Round to the nearest degree class=

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sumayayahya15pc9y3u sumayayahya15pc9y3u

04-08-2018

the answer is 52°

use the laws of trig

its a right triangle, so cotan 9/7 is 52°

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jimthompson5910 jimthompson5910

04-08-2018

tan(angle) = opposite/adjacent

tan(B) = AC/AB

tan(B) = 9/7

B = arctan(9/7)

B = 52.125 which is approximate

B = 52

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The final answer is choice D) 52 degrees

Answer Link

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