sin 2a = ???

7 ⤊

2006-12-17 06:39:40 · 4 answers · asked by wicked 1 in Science & Mathematics ➔ Mathematics

sin 2a = 2 sin a cos a .

2006-12-18 13:48:11 · answer #1 · answered by Anonymous · 3⤊ 0⤋

use the double angle formula:
sin 2a = 2sin a cos a

2006-12-19 17:48:16 · answer #2 · answered by lobis3 5 · 2⤊ 0⤋

sin2a = 2 sina cosa

2006-12-20 11:03:08 · answer #3 · answered by pedazodegente 1 · 1⤊ 0⤋

2sinacosa

2006-12-17 16:15:29 · answer #4 · answered by socialistmath 2 · 1⤊ 0⤋