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Pertanyaan

Titik-titik sudut segitiga ABC adalah A ( 0 , 2 ) , B ( − 3 ​ , − 1 ) , dan C ( 3 ​ , − 1 ) . Tentukan bayangan △ ABC karena rotasi berikut. b. [ P ( 2 , 1 ) , R ( − 2 π ​ ) ]

Titik-titik sudut segitiga  adalah , dan . Tentukan bayangan  karena rotasi berikut.

b.  

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G. Albiah

Master Teacher

Mahasiswa/Alumni Universitas Galuh Ciamis

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titik-titik sudut segitiga adalah , , dan .

titik-titik sudut segitiga begin mathsize 14px style ABC end style adalah straight A apostrophe left parenthesis 3 comma space 3 right parenthesis, straight B apostrophe left parenthesis 5 comma space 1 minus square root of 3 right parenthesis, dan straight C apostrophe left parenthesis 5 comma space 1 plus square root of 3 right parenthesis.

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Pembahasan

Transformasi rotasi ., Maka, 1. 2. 3. Jadi, titik-titik sudut segitiga adalah , , dan .

Transformasi rotasi straight R open parentheses negative straight pi over 2 close parentheses.,

table attributes columnalign right center left columnspacing 0px end attributes row cell negative straight pi over 2 end cell equals cell negative 180 over 2 end cell row blank equals cell negative 90 end cell end table

Maka,

1. undefined

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row cell cos space open parentheses negative 90 close parentheses end cell cell negative sin space open parentheses negative 90 close parentheses end cell row cell sin space open parentheses negative 90 close parentheses end cell cell cos space open parentheses negative 90 close parentheses end cell end table close parentheses open parentheses table row cell x minus h end cell row cell y minus k end cell end table close parentheses plus open parentheses table row h row k end table close parentheses end cell row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row cell cos space 90 end cell cell sin space 90 end cell row cell negative sin space 90 end cell cell cos space 90 end cell end table close parentheses open parentheses table row cell 0 minus 2 end cell row cell 2 minus 1 end cell end table close parentheses plus open parentheses table row 2 row 1 end table close parentheses end cell row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row 0 1 row cell negative 1 end cell 0 end table close parentheses open parentheses table row cell negative 2 end cell row 1 end table close parentheses plus open parentheses table row 2 row 1 end table close parentheses end cell row blank equals cell open parentheses table row 1 row 2 end table close parentheses plus open parentheses table row 2 row 1 end table close parentheses end cell row blank equals cell open parentheses table row 3 row 3 end table close parentheses end cell end table

2. begin mathsize 14px style straight B left parenthesis negative square root of 3 comma space minus 1 right parenthesis end style

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row cell cos space open parentheses negative 90 close parentheses end cell cell negative sin space open parentheses negative 90 close parentheses end cell row cell sin space open parentheses negative 90 close parentheses end cell cell cos space open parentheses negative 90 close parentheses end cell end table close parentheses open parentheses table row cell x minus h end cell row cell y minus k end cell end table close parentheses plus open parentheses table row h row k end table close parentheses end cell row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row cell cos space 90 end cell cell sin space 90 end cell row cell negative sin space 90 end cell cell cos space 90 end cell end table close parentheses open parentheses table row cell 0 minus left parenthesis negative square root of 3 right parenthesis end root end cell row cell 2 minus left parenthesis negative 1 right parenthesis end cell end table close parentheses plus open parentheses table row cell negative square root of 3 end cell row cell negative 1 end cell end table close parentheses end cell row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row 0 1 row cell negative 1 end cell 0 end table close parentheses open parentheses table row cell square root of 3 end cell row 3 end table close parentheses plus open parentheses table row cell negative square root of 3 end cell row cell negative 1 end cell end table close parentheses end cell row blank equals cell open parentheses table row 3 row cell negative square root of 3 end cell end table close parentheses plus open parentheses table row 2 row 1 end table close parentheses end cell row blank equals cell open parentheses table row 5 row cell 1 minus square root of 3 end cell end table close parentheses end cell end table

3. undefined

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row cell cos space open parentheses negative 90 close parentheses end cell cell negative sin space open parentheses negative 90 close parentheses end cell row cell sin space open parentheses negative 90 close parentheses end cell cell cos space open parentheses negative 90 close parentheses end cell end table close parentheses open parentheses table row cell x minus h end cell row cell y minus k end cell end table close parentheses plus open parentheses table row h row k end table close parentheses end cell row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row cell cos space 90 end cell cell sin space 90 end cell row cell negative sin space 90 end cell cell cos space 90 end cell end table close parentheses open parentheses table row cell 0 minus square root of 3 end cell row cell 2 minus left parenthesis negative 1 right parenthesis end cell end table close parentheses plus open parentheses table row cell square root of 3 end cell row cell negative 1 end cell end table close parentheses end cell row cell open parentheses table row cell x apostrophe end cell row cell y apostrophe end cell end table close parentheses end cell equals cell open parentheses table row 0 1 row cell negative 1 end cell 0 end table close parentheses open parentheses table row cell negative square root of 3 end cell row 3 end table close parentheses plus open parentheses table row cell negative square root of 3 end cell row cell negative 1 end cell end table close parentheses end cell row blank equals cell open parentheses table row cell negative 3 end cell row cell square root of 3 end cell end table close parentheses plus open parentheses table row 2 row 1 end table close parentheses end cell row blank equals cell open parentheses table row 1 row cell 1 plus square root of 3 end cell end table close parentheses end cell end table

Jadi, titik-titik sudut segitiga begin mathsize 14px style ABC end style adalah straight A apostrophe left parenthesis 3 comma space 3 right parenthesis, straight B apostrophe left parenthesis 5 comma space 1 minus square root of 3 right parenthesis, dan straight C apostrophe left parenthesis 5 comma space 1 plus square root of 3 right parenthesis.

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