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Tentukan nilai dari cot ( 75 0 ∘ ) + tan ( − 6 0 ∘ ) !

Tentukan nilai dari  !

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Z. Apriani

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

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Pembahasan

Diperhatikan bahwa . Sehingga, Dengan demikian,

Diperhatikan bahwa begin mathsize 14px style tan left parenthesis negative theta degree right parenthesis equals negative tan left parenthesis theta degree right parenthesis end style. Sehingga,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell cot left parenthesis 750 degree right parenthesis plus tan left parenthesis negative 60 degree right parenthesis end cell equals cell cot left parenthesis open parentheses 4 straight pi plus 30 close parentheses degree right parenthesis minus tan left parenthesis 60 degree right parenthesis end cell row blank equals cell fraction numerator 1 over denominator tan left parenthesis left parenthesis 4 straight pi plus 30 right parenthesis degree right parenthesis end fraction minus tan left parenthesis 60 degree right parenthesis end cell row blank equals cell fraction numerator 1 over denominator tan left parenthesis 30 degree right parenthesis end fraction minus tan left parenthesis 60 degree right parenthesis end cell row blank equals cell fraction numerator cos left parenthesis 30 degree right parenthesis over denominator sin left parenthesis 30 degree right parenthesis end fraction minus fraction numerator sin left parenthesis 60 degree right parenthesis over denominator cos left parenthesis 60 degree right parenthesis end fraction end cell row blank equals cell fraction numerator begin display style 1 half end style square root of 3 over denominator begin display style 1 half end style end fraction minus fraction numerator begin display style 1 half end style square root of 3 over denominator begin display style 1 half end style end fraction end cell row blank equals cell square root of 3 minus square root of 3 end cell row blank equals 0 end table end style 


Dengan demikian,

table attributes columnalign right center left columnspacing 0px end attributes row cell cot left parenthesis 750 degree right parenthesis plus tan left parenthesis negative 60 degree right parenthesis end cell equals 0 end table

Latihan Bab

Konsep Kilat

Derajat dan Radian

Perbandingan Sisi (Trigonometri)

Sudut Istimewa (Trigonometri)

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di sesi Live Teaching, GRATIS!

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