jawaban 1731130046 M. ZAINULLAH
jawaban soal dari Ali Wasil
1. Sinθ = x/4
= Sin 45°.4
= 1/2√2.4
= 2√2
R = 2√2i + 2√2j
Cosθ = Y/4
Y = Cos 45°.4
Y =1/2√2.4
= 2√2
jawaban soal dari rifqi agung
2. A . B = AxBx + AyBy + AzBz
1. Sinθ = x/4
= Sin 45°.4
= 1/2√2.4
= 2√2
R = 2√2i + 2√2j
Cosθ = Y/4
Y = Cos 45°.4
Y =1/2√2.4
= 2√2
jawaban soal dari rifqi agung
2. A . B = AxBx + AyBy + AzBz
A . B = 3 . 8 + 4 .
5 + 6 . (– 8)
A . B = 24 +
20 – 48
A . B = – 4