PLS HELP ASAP:Find all the missing elements:

B = 34.2°

C = 105.8°

c = 12.0 units

Step-by-step Explanation:

Given:

A = 40°

a = 8

b = 7

Required:

Find B, C, and c.

SOLUTION:

Using the Law of Sines, find <B:

Multiply both sides by 7

(to nearest tenth).

Find <C:

C = 180 - (34.2+40°) (sum of angles in a triangle)

C = 180 - 74.2 = 105.8°

Using the Law of Sines, find c.

Multiply both sides by sin(105.8)

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

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