what is the distance between the points (10 cos 30°,0) and (0, 10 cos 60°)?
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Let one coordinate be A(10cos30,0) and B(0,10cos60)
=>√(0-10cos30)^2+(10cos60-0)^2
=>100cos^2 30°+100cos^2 60°
=>100*[√3/2]^2+100(1/2)^2
=>25*3+25
=>100
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