bantu jawab kak + cara, makasih
Jawab:
cos α = samping/miring
(sisi miring)² = 1² + 2² = 5
sisi miring = √5
cos α = [tex]\frac{samping}{miring}[/tex]
= [tex]\frac{1}{\sqrt{5} }[/tex]
= [tex]\frac{1X\sqrt{5} }{\sqrt{5}X\sqrt{5} }[/tex]
= [tex]\frac{1X\sqrt{5} }{5} }[/tex]
= [tex]\frac{1}{5} \sqrt{5}[/tex]
[answer.2.content]
