Common chord
The common chord of the two circles, c1 and c2, is 3.8 cm long. This chord forms an angle of 47° with the radius r1 in the circle c1. An angle of 24° 30' with the radius r2 is formed in the circle c2. Calculate both radii and the distance between the two centers of the circles.
Correct answer:
![](/img/93/common_chord_two_circles.jpg)
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You need to know the following knowledge to solve this word math problem:
- algebra
- expression of a variable from the formula
- planimetrics
- right triangle
- triangle
- chord
- goniometry and trigonometry
- sine
- cosine
Units of physical quantities:
Grade of the word problem:
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