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cos ( − 112 5 ∘ ) = ...

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S. Nur

Master Teacher

Jawaban terverifikasi

Jawaban

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 table attributes columnalign right center left columnspacing 0px end attributes row blank blank cos 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 negative 1125 degree 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 1 half end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell square root of 2 end cell end table.

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Pembahasan

Ingat konsep nilai sudut lebih : Dengan demikian .

Ingat konsep nilai sudut lebih 360 degree:

table attributes columnalign right center left columnspacing 0px end attributes row cell cos space open parentheses negative 1125 degree close parentheses end cell equals cell cos open parentheses negative open parentheses 1.080 degree plus 45 degree close parentheses close parentheses end cell row blank equals cell cos space open parentheses 3 cross times 360 degree plus 45 degree close parentheses end cell row blank equals cell cos space 45 degree end cell row blank equals cell 1 half square root of 2 end cell end table 

Dengan demikian table attributes columnalign right center left columnspacing 0px end attributes row blank blank cos 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 negative 1125 degree 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 1 half end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell square root of 2 end cell end table.

Latihan Bab

Konsep Kilat

Derajat dan Radian

Perbandingan Sisi (Trigonometri)

Sudut Istimewa (Trigonometri)

252

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