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7-22.

Find the value of x. Homework Help ✎

a.

b.

Use the Law of Cosines:

For any ΔABC:
a2 = b2 + c2 − 2bc · cos(A)

x ≈ 33.752

Use the Law of Sines:

For any ΔABC:

x ≈ 9.663