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11-05-2021
Mathematics

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Use the Law of Cosines to find the measure of ∠F. Round to the nearest degree.
f = 5, g = 6, h = 7

Use: f² = g² + h² – 2gh cos F

Use the Law of Cosines to find the measure of F Round to the nearest degree f 5 g 6 h 7 Use f g h 2gh cos F class=

Respuesta :

14-05-2021

Answer:

Solution given.

f = 5, g = 6, h = 7

<F=?

we have;

f² = g² + h² – 2gh cos F

5²-6²-7²=-2×6×7 cos F

-60/-84=cos F

F=cos-¹(5/7)=44.41°

<F=44.4° is a required answer

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