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Pertanyaan

begin mathsize 14px style 2 sin space 60 degree space sin space 20 degree equals.... end style 

Pembahasan Soal:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 2 space sin space 60 degree space sin space 20 degree end cell equals cell – 1 space. – 2 space sin space 60 degree space sin space 20 degree space end cell row blank equals cell – 1 left parenthesis cos left parenthesis 60 degree plus 20 degree right parenthesis – cos left parenthesis 60 degree – 20 degree right parenthesis right parenthesis space end cell row blank equals cell – 1 left parenthesis cos space 80 degree – cos space 40 degree right parenthesis space space end cell row blank equals cell – cos space 80 degree plus cos space 40 degree space space end cell row blank equals cell cos space 40 degree – cos space 80 degree space space end cell end table end style

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 02 Maret 2021

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