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Tentukan penyelesaian dari setiap persamaan trigonometri berikut. a. tan 2 1 ​ x = tan 6 π ​ , 0 ≤ x ≤ 2 π

Tentukan penyelesaian dari setiap persamaan trigonometri berikut.

a.  

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penyelesaian persamaan trigonometri adalah .

penyelesaian persamaan trigonometri tan space 1 half x equals tan space straight pi over 6 comma space 0 less or equal than x less or equal than 2 straight pi adalah HP equals open curly brackets straight pi over 3 close curly brackets.

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Ingat kembali aturan penyelesaian persamaan trigonometri berikut: Diketahui persamaan trigonometri . Maka: Sehingga: Jadi, penyelesaian persamaan trigonometri adalah .

Ingat kembali aturan penyelesaian persamaan trigonometri berikut:

tan space x equals tan space alpha rightwards double arrow x equals alpha plus πk 

Diketahui persamaan trigonometri tan space 1 half x equals tan space straight pi over 6 comma space 0 less or equal than x less or equal than 2 straight pi. Maka:

table attributes columnalign right center left columnspacing 0px end attributes row cell tan space x end cell equals cell tan space alpha end cell row cell tan space 1 half x end cell equals cell tan space straight pi over 6 end cell end table 

Sehingga:

table attributes columnalign right center left columnspacing 0px end attributes row x equals cell alpha plus straight pi k end cell row cell 1 half x end cell equals cell straight pi over 6 plus straight pi k end cell row x equals cell fraction numerator straight pi over 6 plus straight pi k over denominator begin display style 1 half end style end fraction end cell row x equals cell open square brackets straight pi over 6 plus straight pi k close square brackets cross times 2 over 1 end cell row x equals cell straight pi over 3 plus 2 straight pi k end cell end table 

begin mathsize 12px style k equals negative 1 rightwards arrow table attributes columnalign right center left columnspacing 0px end attributes row blank blank x end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight pi over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank k end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight pi over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses negative 1 close parentheses end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 5 over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses TM close parentheses end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank k end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 0 end table table attributes columnalign right center left columnspacing 0px end attributes row blank rightwards arrow blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight x end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight pi over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight k end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight pi over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses 0 close parentheses end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight pi over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses straight M close parentheses end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank k end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 1 end table table attributes columnalign right center left columnspacing 0px end attributes row blank rightwards arrow blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight x end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight pi over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight k end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight pi over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses 1 close parentheses end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 7 over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight pi end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses TM close parentheses end cell end table end style 

Jadi, penyelesaian persamaan trigonometri tan space 1 half x equals tan space straight pi over 6 comma space 0 less or equal than x less or equal than 2 straight pi adalah HP equals open curly brackets straight pi over 3 close curly brackets.

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