ubahlah ke bentuk satuan derajat dan radian dari 2/5 dan 3/10
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Berarti, 2/5 x 360 derajat = 144 derajat
Kemudian, 2/5 di salin ke radian
Berarti, 2/5 x 2 phi = 4 phi/5
3/10 disalin ke derajat
Berarti, 3/10 x 360 derajat = 108 derajat
Kemudian, disalin ke radian
Berarti, 3/10 x 2 phi = 3 phi/5