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Diketahui segitiga PQR mempunyai panjang sisi PR = 6 cm , PQ = 8 cm . Jika luas segitiga PQR = 12 cm 2 . Besar ∠ P adalah...

Diketahui segitiga PQR mempunyai panjang sisi $PR = 6 cm, PQ = 8 cm$ . Jika luas segitiga $PQR = 12 cm^{2}$ . Besar $∠ P$ adalah...

Y. Herlanda

Master Teacher

Mahasiswa/Alumni STKIP PGRI Jombang

Jawaban terverifikasi

Jawaban

besar .

besar

angle P equals 30 degree space atau space 150 degree

Pembahasan

Jadi, besar .

$table attributes columnalign right center left columnspacing 0px end attributes row cell L increment space P Q R end cell equals cell 12 space cm squared end cell row cell 1 half cross times P R cross times P Q cross times sin space P end cell equals cell 12 space cm squared end cell row cell 1 half cross times 6 space cm cross times 8 space cm cross times sin space P end cell equals cell 12 space cm squared end cell row cell 24 space cm squared cross times sin space P end cell equals cell 12 space cm squared end cell row cell sin space P end cell equals cell fraction numerator 12 space cm squared over denominator 24 space cm squared end fraction end cell row blank equals cell 1 half end cell row P equals cell a r c sin space 1 half end cell row blank equals cell 30 degree space open parentheses Kuadran space straight I close parentheses end cell row blank equals cell 150 degree space open parentheses Kuadran space II close parentheses end cell row blank blank blank end table$

Jadi, besar angle P equals 30 degree space atau space 150 degree .