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Given the triangle, find the length of X. Give your answer in simpliest radical form.

Given the triangle, find the length of X. Give your answer in simpliest radical form-example-1

1 Answer

2 votes

Answer:

x = 4
√(2)

Explanation:

using the cosine ratio in the lower right triangle and the exact value

cos45° =
(1)/(√(2) ) } , then

cos45° =
(adjacent)/(hypotenuse) =
(4)/(x) =
(1)/(√(2) ) ( cross- multiply )

x = 4
√(2)

User Errorpro
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