gisellaraa
1. cosec b : kebalikan dari sin b, jika cosec b = 20/16 maka sin b = 16/20. sin = de/mi. gunakan segitiga phytagoras utk mendapatkan nilai sampingnya sa2 =√mi2-de2 = √20^2-16^2 =√400-256 =√144=12 cos b = sa/mi = 12/20= 3/5
2. cot a = kebalikan dari tan a cot a= sa/de = 16/12 tan a = de/sa = 12/16 mi^2=√de^2+sa^2 =√12^2+16^2 =√144+256 =√400 =20 sin a = de/mi = 12/20 = 3/5
sa2 =√mi2-de2
= √20^2-16^2
=√400-256
=√144=12
cos b = sa/mi = 12/20= 3/5
2. cot a = kebalikan dari tan a
cot a= sa/de = 16/12
tan a = de/sa = 12/16
mi^2=√de^2+sa^2
=√12^2+16^2
=√144+256
=√400
=20
sin a = de/mi = 12/20 = 3/5
maaf jika salah☺