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Perhatikan gambar berikut.   Tentukan: a. nilai , b. besar .

Pertanyaan

Perhatikan gambar berikut.



 

Tentukan:

a. nilai x,

b. besar angle COB.begin mathsize 14px style space end style 

Pembahasan Soal:

Sudut berpenyiku berjumlah 90 degree.

angle AOB berpenyiku dengan angle COB, maka nilai x:

table attributes columnalign right center left columnspacing 0px end attributes row cell angle AOB plus angle COB end cell equals cell 90 degree end cell row cell open parentheses 2 x minus 16 close parentheses degree plus open parentheses 5 x minus 10 close parentheses degree end cell equals cell 90 degree end cell row cell 2 x degree minus 16 degree plus 5 x degree minus 10 degree end cell equals cell 90 degree end cell row cell 7 x degree minus 26 degree end cell equals cell 90 degree end cell row cell 7 x degree end cell equals cell 90 degree plus 26 degree end cell row cell x degree end cell equals cell 116 over 7 end cell row cell x degree end cell equals cell 16 comma 6 degree end cell end table   

b. Besar angle COB:

table attributes columnalign right center left columnspacing 0px end attributes row cell angle COB end cell equals cell 5 x degree minus 10 degree end cell row blank equals cell 5 times 16 comma 6 degree minus 10 degree end cell row blank equals cell 5 times 16 comma 6 degree minus 10 degree end cell row blank equals cell 83 degree minus 10 degree end cell row blank equals cell 73 degree end cell end table   

Jadi, x equals 16 comma 6 degree dan table attributes columnalign right center left columnspacing 0px end attributes row blank blank angle end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank COB 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 73 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree end table.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 21 Mei 2021

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