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Nookie1986 [14]
3 years ago
7

Answers are 36,54,198,72

Mathematics
1 answer:
MArishka [77]3 years ago
8 0

Answer:

72°

Step-by-step explanation:

∠ AOB = 20% of 360° = 0.2 × 360° = 72°

arc AB is equal to the angle subtended at the centre , that is

arc AB = 72°

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Find the measure of angle X in the triangle below.
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Answer:

  X = 89.92° or 90.08°

Step-by-step explanation:

The law of sines can be used to find the value of angle X:

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_____

<em>Comment on the problem</em>

We suspect that the angle is supposed to be considered to be 90°. However, the given angle is reported to 2 decimal places, so we figure the requested angle should also be reported to 2 decimal places.

The lengths of the short side that correspond to the above angles are 10.03 and 9.97 units. If the short side were considered to be 10 units, the triangle would be a right triangle, and the larger acute angle would be ...

  arcsin(24/26) ≈ 67.38014° . . . . rounds to 67.38°

This points up the difficulty of trying to use the Law of Sines on a triangle that is actually a right triangle.

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