rdesmangles rdesmangles

17-06-2022
Mathematics

contestada

please help I dont understand

please help I dont understand class=

Respuesta :

Medunno13 Medunno13

20-06-2022

Answer:

38 degrees

Step-by-step explanation:

By the Law of Cosines,

5² = 3² + 7² - 2(3)(7) cos A

5² - 3² - 7² = -2(3)(7) cos A

-33 = -42 cos A

cos A = 33/42

A = arccos(33/42), which is about 38 degrees.

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