se a sec de X é 9/4. qual é o cos de X?

0 ⤊

sec = 1/cos

sec x = 9/4

cos x = 4/9 <<<

=D espero ter ajudado

2006-12-04 06:32:52 · answer #1 · answered by Andréa 2 · 0⤊ 0⤋

sec x = 9/4
sec x = 1/cos x
1/cos x = 9/4

cos x = 4/9

₢

2006-12-04 10:26:32 · answer #2 · answered by Luiz S 7 · 0⤊ 0⤋

cosseno é o inverso de seno, então é 4/9.

=)

2006-12-04 06:16:20 · answer #3 · answered by Kratus 3 · 0⤊ 0⤋

---cosx = 1/secx = 1/9/4 =4/9 = 0,444444

2006-12-04 06:11:14 · answer #4 · answered by Mazopust 7 · 0⤊ 0⤋

4/9.

2006-12-04 06:10:12 · answer #5 · answered by miguel a 6 · 0⤊ 0⤋