1. Dari data di atas, maka sisi miring nya adalah :
PR² = PQ² + QR²
PR² = (12 cm)² + (8 cm)²
PR² = 144 cm² + 64 cm²
PR² = 208 cm²
PR = √(208 cm²)
PR = 4√13 cm
sin P = sisi depan sudut P/sisi miring
= QR/PR
= 8 / 4√13
= 2√13 (C.)
2. f(x) = x² + 4x - 10
f(p) = p² + 4p - 10
2 = p² + 4p - 10
0 = p² + 4p - 10 - 2
0 = p² + 4p - 12
0 = (p + 6)(p - 2)
p = -6 atau 2 (B.)
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1. Dari data di atas, maka sisi miring nya adalah :
PR² = PQ² + QR²
PR² = (12 cm)² + (8 cm)²
PR² = 144 cm² + 64 cm²
PR² = 208 cm²
PR = √(208 cm²)
PR = 4√13 cm
sin P = sisi depan sudut P/sisi miring
= QR/PR
= 8 / 4√13
= 2√13 (C.)
2. f(x) = x² + 4x - 10
f(p) = p² + 4p - 10
2 = p² + 4p - 10
0 = p² + 4p - 10 - 2
0 = p² + 4p - 12
0 = (p + 6)(p - 2)
p = -6 atau 2 (B.)