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Shalnov [3]
3 years ago
15

What is the value of x ?

Mathematics
2 answers:
tresset_1 [31]3 years ago
6 0

Answer:

A

Step-by-step explanation:

Since DE and XY are parallel lines, then

x and 85 are alternate angles and congruent, hence

x = 85 → A

sveticcg [70]3 years ago
5 0

Answer:

Choice A, 85

Step-by-step explanation:

The two angles are alternate interior angles, which are congruent because DE and XY are parallel lines.

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Answer:

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Using the sine and cosine ratios in the right triangle

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---------------------------------------------------------------------------------------

cos30° = \frac{adjacent}{hypotenuse} = \frac{x}{y}

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12 × cos30° = x

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