Jawaban mutia septi 1731130122
Jawaban soal http://elektromagnetiksamodro.blogspot.com/2018/09/soal1731130127agung-dwi-hartanto.html?m=1
AB = |A|.|B| cos A
Cos A = AB/ |A|.|B|
A = -4i+k
B = 4i- k
A=.4+1.-1=-17/ akar -4kuadrat+1kuadrat
B= akar 4kuadrat +-1kuadrat
Cos a = -17kuadrat/17kuadrat.17kuadrat
=-17/17
=-1
Jawaban soal 2 https://elektromagnetiksamodro.blogspot.com/2018/09/soal-1731130013-secondamega-harismawati.html?m=1
A) (-4-0)i+(8-5)j
=-4i+3j
B) Q = tanmin 1 |3/4|
= Tanmin1 0,75
=-370
C) akar -4kuadrat+3kuadrat
=akar 16+akar 9
=akar 25
= 5
AB = |A|.|B| cos A
Cos A = AB/ |A|.|B|
A = -4i+k
B = 4i- k
A=.4+1.-1=-17/ akar -4kuadrat+1kuadrat
B= akar 4kuadrat +-1kuadrat
Cos a = -17kuadrat/17kuadrat.17kuadrat
=-17/17
=-1
Jawaban soal 2 https://elektromagnetiksamodro.blogspot.com/2018/09/soal-1731130013-secondamega-harismawati.html?m=1
A) (-4-0)i+(8-5)j
=-4i+3j
B) Q = tanmin 1 |3/4|
= Tanmin1 0,75
=-370
C) akar -4kuadrat+3kuadrat
=akar 16+akar 9
=akar 25
= 5