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erik [133]
3 years ago
10

Find area of triangle ​

Mathematics
1 answer:
ivanzaharov [21]3 years ago
7 0

Answer:

49.1 cm² (round to nearest 10)

Step-by-step explanation:

- use trigonometry to find the <em>h</em><em>e</em><em>i</em><em>g</em><em>h</em><em>t</em><em>(</em><em>h</em><em>)</em><em> </em>of the triangle

- substitute height and base(b) 12cm into the formula

<em>A</em><em> </em><em>=</em><em> </em><em>½</em><em> </em><em>×</em><em> </em><em>b</em><em> </em><em>×</em><em> </em><em>h</em><em> </em><em>.</em>

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Answer:

∠ XYZ = 41°

Step-by-step explanation:

∠ XYZ = ∠ 3x + 20 ( corresponding angles ) , thus

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x = 7

Thus

∠ XYZ = 8x - 15 = 8(7) - 15 = 56 - 15 = 41°

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