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Perhatikan gambar berikut! Tentukan: b) Besar sudut

Pertanyaan

Perhatikan gambar berikut!

Tentukan:

b) Besar sudut straight C 

Pembahasan Soal:

Dari gambar yang diberikan, dapat ditentukan:

space space space space space space space space space space space space space space space space space angle straight A plus angle straight B plus angle straight C equals 180 degree rightwards arrow angle dalam space segitiga straight x degree plus open parentheses straight x minus 12 close parentheses degree plus open parentheses 2 straight x minus 15 close parentheses degree equals 180 degree space space space space straight x degree plus straight x degree minus 12 degree plus 2 straight x degree minus 15 degree equals 180 degree space space space space space space space space space space space space space space space space space space space space space space space space space space space space 4 straight x degree minus 27 degree equals 180 degree space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 4 straight x degree equals 180 degree plus 27 degree space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 4 straight x degree equals 207 degree space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space straight x degree equals fraction numerator 207 degree over denominator 4 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space straight x degree equals 51 comma 75 degree 

Maka:

angle straight C equals open parentheses 2 straight x minus 15 close parentheses degree angle straight C equals open parentheses 2 times 51 comma 75 minus 15 close parentheses degree angle straight C equals open parentheses 103 comma 5 minus 15 close parentheses degree angle straight C equals 88 comma 5 degree 

Jadi, besar sudut straight C adalah 88 comma 5 degree.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 03 Juni 2021

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