Pertanyaan

Tentukan nilai sin , cos , tan , cotan , sec , dan cosec pada kuadran I,II,II,IV Kuadran I { 0 , 3 0 ∘ , 4 5 ∘ , 6 0 ∘ , 9 0 ∘ }

Tentukan nilai $sin, cos, tan, cotan, sec, dan cosec$ pada kuadran I,II,II,IV

Kuadran I ${0, 3 0^{\circ}, 4 5^{\circ}, 6 0^{\circ}, 9 0^{\circ}}$

A. Rahmawati

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Indonesia

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Pembahasan

Pada kuadran I nilai trigonomentri bernilai positif maka

$table attributes columnalign right center left columnspacing 0px end attributes row cell sin space 0 degree end cell equals 0 row cell cos space 0 degree end cell equals 1 row cell tan space 0 degree end cell equals 0 row cell cotan space 0 degree end cell equals infinity row cell sec space 0 degree end cell equals 1 row cell cosec space 0 degree end cell equals cell tak space terdefenisi end cell row cell sin space 30 degree end cell equals cell 1 half end cell row cell cos space 30 degree end cell equals cell 1 half square root of 3 end cell row cell tan space 30 degree end cell equals cell 1 third square root of 3 end cell row cell cotan space 30 degree end cell equals cell fraction numerator 3 over denominator square root of 3 end fraction end cell row cell sec space 30 degree end cell equals cell fraction numerator 2 over denominator square root of 3 end fraction end cell row cell cosec space 30 degree space end cell equals 2 row cell sin space 45 degree end cell equals cell 1 half square root of 2 end cell row cell cos space 45 degree end cell equals cell 1 half square root of 2 end cell row cell tan space 45 degree end cell equals 1 row cell cotan space 45 degree end cell equals 1 row cell sec space 45 degree end cell equals cell fraction numerator 2 over denominator square root of 2 end fraction end cell row cell cosec space 45 degree end cell equals cell fraction numerator 2 over denominator square root of 2 end fraction end cell row cell sin space 60 degree end cell equals cell 1 half square root of 3 end cell row cell cos space 60 degree end cell equals cell 1 half end cell row cell tan space 60 degree end cell equals cell square root of 3 end cell row cell cotan space 60 degree end cell equals cell 1 third square root of 3 end cell row cell sec space 60 degree end cell equals 2 row cell cosec space 60 degree end cell equals cell fraction numerator 2 over denominator square root of 3 end fraction end cell row cell sin space 90 degree end cell equals 1 row cell cos space 90 degree end cell equals 0 row cell tan space 90 degree end cell equals cell tak space terdefenisi end cell row cell cotan 90 degree end cell equals 1 row cell sec space 90 degree end cell equals minus row cell cosec space 90 degree end cell equals 1 end table$

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