A) 5 units
B) 15 units
C) -5 units
D) -15 units
Correct Answer: A
Solution :
(a): \[XY=5\sqrt{3}\]units OX = 5 units \[\angle OXY={{90}^{{}^\circ }}\] \[\therefore \]\[OY=\sqrt{X{{Y}^{2}}+O{{X}^{2}}}\] \[=\sqrt{{{\left( 5\sqrt{3} \right)}^{2}}+{{5}^{2}}}\] \[=\sqrt{75+25}\] \[=\sqrt{100}=10\]units \[\therefore \]\[YZ=OY-OZ\] \[=10-5=5\]units
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