1 Answer

Aqib Shahzad · Answer 1 · 2024-12-22T11:03:18+0000

Answer:

AB=8.1 and B=29.6

Explanation:

1) To find the measure of AB, use the law of cosines

c^2=4^2+7^2-2(4)(7)cos(90)

$c^2 = 16+49 -56cos(90)\\c^2= 65\\c=8.1$

2) Use law of sines to find the measure of B

(8.1)/(sin(90)) =(4)/(sin(B))

B=29.6

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