A satellite is circling 145 miles above the earth, as shown in the figure. When the satellite is directly above point B, angle A is found to be 74.8º. Use this information to find the radius of the earth. Apply the rules regarding the use of significant digits when determining your answers.
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Earth's radius = __________ mi
Fill in the blank(s) with the appropriate word(s).
4,000
Mathematics
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A. -0.75 B. -17.5 C. -7.5 D. -1.75
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A. -2
B. -4
C. 4
D. -4
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A. 
B. -1
C. 
D. 1 - 5x
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