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In triangle XYZ, Z = 46 cm, x = 45 cm and ZY=81º. Find the length of y, to the nearest centimeter.
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In triangle XYZ, Z = 46 cm, x = 45 cm and ZY=81º. Find the length of y, to the nearest

centimeter.

In triangle XYZ, Z = 46 cm, x = 45 cm and ZY=81º. Find the length of y, to the nearest-example-1
User Sinisha
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1 Answer

13 votes
Because the angle is between the two sides, you use the cosine law, A^2= B^2 + C^2 -2BCosangleA
a^2=46^2+45^2-2*45*46cos81
User Cowbaymoo
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4.8k points
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