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Please help me with this ​
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Please help me with this ​

Please help me with this ​-example-1
User James Harpe
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1 Answer

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Answer: Z'(-7;8)

suppose the coordinates of Z' is Z'(x,y)

we have:


\left \{ {{x=8.cos90-7.sin90=-7} \atop {y=8.sin90+7.cos90=8}} \right.

=> Z'(-7;8)

Explanation:

User Ose
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