Answers A4142 Geometry 2 Test — TestQuestion 4

4

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Question 4 • A4142 Geometry 2

Law of cosines: a2 = b2 + c2 – 2bccos(A)

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Answer

A

92 = y2 + 192 – 2(y)(19)cos(41°)

B

y2 = 92 + 192 – 2(y)(19)cos(41°)

C

92 = y2 + 192 – 2(9)(19)cos(41°)

D

y2 = 92 + 192 – 2(9)(19)cos(41°)