Asked by ervin
"Two points A and B on the circle x^2 + y^2 = 49 form a central angle of 30 degree with the radii draw to them. Find the length of the arc AB in term of pi?"
Answers
Answered by
Helper
x^2 + y^2 = 49
r^2 = 49
r = 7
Arc length A = angle in rads * r
To convert 30 deg to radians
30 deg * pi/180 = 30pi/180 = pi/6
A = pi/6 * 7
A = 7pi/6
r^2 = 49
r = 7
Arc length A = angle in rads * r
To convert 30 deg to radians
30 deg * pi/180 = 30pi/180 = pi/6
A = pi/6 * 7
A = 7pi/6
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