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sashaice [31]
3 years ago
13

In △XYZ , XZ=11 , YZ=8 , and m∠Z=31∘ .

Mathematics
1 answer:
Natalija [7]3 years ago
8 0

Answer:

The area of the triangle is 22.7 units²

Step-by-step explanation:

The formula of the area of a triangle using trigonometry is A = \frac{1}{2} (a)(b) sin(C), where a , b are two sides in the triangle and C is the angle between these two sides

In Δ XYZ

∵ XZ = 11 units

∵ YZ = 8 units

∵ m∠Z = 31°

∵ ∠Z is between the two sides XZ and YZ

∴ We can use the formula above to find the area of Δ XYZ

∵ Area Δ XYZ = \frac{1}{2} (XZ)(YZ) sin(Z)

∴ Area Δ XYZ = \frac{1}{2} (11)(8) sin(31)

∴ Area Δ XYZ = 22.6616753 unit²

- Round it to the nearest tenth

∴ Area Δ XYZ = 22.7 units²

The area of the triangle is 22.7 units²

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