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agasfer [191]
2 years ago
6

Find the value of each variable in the circle to the right. The dot represents the center of the circle.

Mathematics
1 answer:
MrMuchimi2 years ago
4 0

9514 1404 393

Answer:

  a = 57.5

  b = 90

  c = 65

Step-by-step explanation:

The measure of an inscribed angle is half that of the arc it intercepts. The angle at 'a' intercepts an arc of 115°, so its measure is (115/2)° = 57.5°

__

The inscribed angle at 'b' is a semicircle, 180°, so the measure of 'b' is (180/2)° = 90°.

__

The arc 'c' is the remainder of a semicircle after 115° have been taken away. Its measure is 180° -115° = 65°.

  (a, b, c) = (57.5, 90, 65)

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Answer:

Height of the object is 68.6 cm.

Step-by-step explanation:

The height of the object can be determined by:

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From the given question;

object distance from pinhole = 3.6 m = 360 cm

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So that;

\frac{360}{4.2} = \frac{object height}{0.8}

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