Jawabanmu

2014-04-04T19:54:04+07:00
Sin 15 = sin (45-30) = (√3-1) ¹/⁴ √2
2014-04-04T19:56:31+07:00
Sin15 = sin(45-30)
= sin45.cos30 - sin30.cos45
= √2 / 2 . √3 / 2 - 1/2 . √2  / 2
√6 - √2 /4
= 0,258