Polar coordinates of Q are (26, 80). Which is x-axis of this point in rectangular system?
A. 4.51
B. 4.25
C. 5.21
D. 5.41
1
Expert's answer
2013-09-05T11:21:10-0400
As we know, rectangular and polar coordinates are related by the following formulas: x=r cos(fi) y=r sin(fi) So, we obtain x=26*cos(80)=4.51 which is A.
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