Jawabanmu

2014-06-12T11:29:42+07:00
Tan = sin /cos
cos = sin /tan
cos = 0,5√2 / 1
cos = 1/2 √2

sec = 1/cos
= 1/0,5√2
= 2/√2
≡√2 *rasionalisasi
2014-06-12T12:21:15+07:00
Sec β = mi/ sa
sin=√2/2
de=√2
mi=2
sa=√(2²-(√2)²)
sa= √4-2
sa=√2
secβ= mi/sa
secβ= 2/√2.√2/√2
secβ= 2/2√2
secβ = 1/√2