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A steel plate has the form of a quarter of a circle with a radius of 49 cm. Two 2-cm holes are to be drilled in the plate. Let (X1,Y1) and (X2,Y2) be the coordinates of the centers of the holes. Find the coordinates for both holes.

A steel plate has the form of a quarter of a circle with a radius of 49 cm. Two 2-cm holes are to be drilled in the plate. Let (X1,Y1) and (X2,Y2) be the coordi class=

Answer :

Nirina7
let A=(X1,Y1) , B=(X2,Y2) and  r = 49 - 2 = 47 
so X1= cos 25x r,     and Y1 = sin25  r
and B=(X2,Y2)
so (X2=  cos (25+24) = cos (49) r and Y2= sin(49) r
 finally  
A= (cos 25r, sin25  r)  and B= (cos (49) r , sin(49) r)

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