Pertanyaan

Hitunglah nilai trigonometri berikut. c. Sec 21 0 ∘

Hitunglah nilai trigonometri berikut.

c. $Sec 21 0^{\circ}$

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Jawaban terverifikasi

Jawaban

Nilai

table attributes columnalign right center left columnspacing 0px end attributes row blank blank sec 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 210 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree 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 2 over 3 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell square root of 3 end cell end table

Pembahasan

Nilai trigonometri pada sudut istimewa. Jadi, Nilai

Nilai trigonometri pada sudut istimewa.

$table attributes columnalign right center left columnspacing 0px end attributes row cell sec space 210 degree end cell equals cell fraction numerator 1 over denominator cos space 210 degree end fraction end cell row blank equals cell fraction numerator 1 over denominator cos space left parenthesis 180 plus 30 right parenthesis degree end fraction end cell row blank equals cell fraction numerator 1 over denominator negative cos space 30 degree end fraction end cell row blank equals cell fraction numerator 1 over denominator negative begin display style fraction numerator square root of 3 over denominator 2 end fraction end style end fraction end cell row blank equals cell negative fraction numerator 2 over denominator square root of 3 end fraction end cell row blank equals cell negative 2 over 3 square root of 3 end cell end table$

Jadi, Nilai