November 2018 1 262 Report
Dik :
tan α° = 1/2
tan b° = 1/4
(0 < α < 90 dan 0 < b < 90)

Hitung nilai
a). sin 2α°
b). cos 2b°
c). tan 2α°
d). sin (α° + 2b°)
e). cos (2α° - b°)
f). tan (2a° + b°)

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