perhatikan gambar berikut. Nilai cos K adalah.....

2√3 × 4 Cm = 2√12

maaf klu salaah
maaf gk bisa ksh cara nya

Cos K = samping / miring

Depan = 4 cm
miring = 2√13 cm
Samping = √(2√13)²-4² = √52-16 = √36 = 6 cm

Cos K = samping / miring
Cos K = 6/(2√13) = (3√13)/13