Jawab:
pakai rumus cosinus
cari BD
pakai rumus phytagoras
Cari Sin A di segitiga ABD
b/sin B = a/ sin A
20/sin 90 = 16/sin A
sin A = 16/20
sin A = 4/5
cari bc di segitiga abc
BC = 5 cm
maka CD = BD - BC
CD = 16 - 5
CD = 11 cm
maksihh
maaf lama
Penjelasan dengan langkah-langkah:
" Life is not a problem to be solved but a reality to be experienced! "
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Jawab:
pakai rumus cosinus
cari BD
pakai rumus phytagoras
Cari Sin A di segitiga ABD
b/sin B = a/ sin A
20/sin 90 = 16/sin A
sin A = 16/20
sin A = 4/5
cari bc di segitiga abc
BC = 5 cm
maka CD = BD - BC
CD = 16 - 5
CD = 11 cm
maksihh
maaf lama
Penjelasan dengan langkah-langkah: