Respuesta :

the answer is 52°

use the laws of trig

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

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