i need help SOOO BAD
2007-05-02 12:08:00 · 3 answers · asked by briighterthansunshiine 1 in Science & Mathematics ➔ Mathematics
Remember that secx = 1/cosx. Apply the FOIL method:
(1-cosx)(1+secx)
= 1 + secx - cosx - 1
= secx - cosx
= 1/cosx - cosx
= (1 - cos^2x)/cosx
= sin^2/cosx
= (sinx)(tanx)
2007-05-02 12:13:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
secx = 1/cosxâ
(1-cosx)(1+1/cosx)....Multiply the means & extremes:
1+1/cosx -cosx-1 = secx-cosx
2007-05-02 12:17:36 · answer #2 · answered by Steve 7 · 0⤊ 0⤋
Multiply first
1 - cosx + secx - cosxsecx
secx = 1/cosx
1 - cosx + 1/cosx - 1
-cosx + 1/cosx
1/cosx - cosx
1/cosx - cos^2x/cosx
(1-cos^2x)/cosx
sin^2x/cosx
I'm not sure where they want you to go with this.
2007-05-02 12:16:48 · answer #3 · answered by TychaBrahe 7 · 0⤊ 0⤋