Question

sen60°=2.sen30°.cos30

Answer 1

Sen60°= 0,866
sen30°= 0,5
cos30°= 0,866
sen60°=2.sen30°.cos30
0,866=2.(0,5).(0,866)
0,866=1.0,866
0,866=0,866
0,866/0,866=1

Answer 2

sen60°=2.sen30°.cos30

√3 / 2 = 2. 1/2. √3 / 2

0,86602540378 = 2 . 0,5 . 0,86602540378

0,86602540378 = 0,86602540378