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Determine The XY\overline { X Y } - Coordinates Of (2,5)( - 2,5 )

Question 21

Multiple Choice

Determine the XY\overline { X Y } - coordinates of (2,5) ( - 2,5 ) If the axes are rotated through an angle ϕ=30\phi = 30 ^ { \circ }


A) X=5232X = \frac { 5 - 2 \sqrt { 3 } } { 2 }
, Y=2+532Y = \frac { 2 + 5 \sqrt { 3 } } { 2 }

B) X=232X = \frac { 2 \sqrt { 3 } } { 2 }
, Y=1532Y = 1 - \frac { 5 \sqrt { 3 } } { 2 }

C) X=523X = 5 - 2 \sqrt { 3 }
, Y=1+32Y = 1 + \frac { \sqrt { 3 } } { 2 }

D) X=5232X = \frac { 5 - 2 \sqrt { 3 } } { 2 }
, Y=3+52Y = \frac { \sqrt { 3 } + 5 } { 2 }

E) X=1+232X = \frac { 1 + 2 \sqrt { 3 } } { 2 }
, Y=5+32Y = - 5 + \frac { \sqrt { 3 } } { 2 }

Correct Answer:

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