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:

50 degrees

Step-by-step explanation:

By the Law of Cosines,

6² = 7.5² + 6.5² - 2(6.5)(7.5)cos C

6² - 7.5² - 6.5² = -2(6.5)(7.5)cos C

-62.5 = -97.5 cos C

cos C = (-62.5)/(-97.5) = 25/39

C = arccos(25/39), which is about 50°

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