archivo5
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
TRIGONOMETRÍA<br />
FUNCIONES TRIGONOMETRICAS DE<br />
ARCO TRIPLE<br />
3Senx – 4 Sen 3 x<br />
Sen 3x= Senx (2Cos 2x+1)<br />
4Cos 3 x – 3 Cosx<br />
Cos3x= Cosx (2Cos 2x - 1)<br />
tang3x=<br />
3<br />
3tan x − Tan x<br />
2<br />
1−<br />
3Tan x<br />
3<br />
3Senx − Sen x<br />
Ejm. Reducir:<br />
3<br />
Sen x<br />
Cos3x<br />
Hallar P = 4 Cos²x - Cosx<br />
Reducir: M = 9 Senx – 12Sen 3 x – 4Sen 3 3x<br />
=<br />
3Senx − (3Senx − 4Sen<br />
Sen x<br />
3<br />
3<br />
3<br />
x) 4Sen x<br />
=<br />
3<br />
Sen x<br />
= 4<br />
2<br />
3<br />
4Cos x ⎛ 4Cos x − 3Cosx ⎞ 3Cosx<br />
= P = − ⎜<br />
⎟ = = 3<br />
1<br />
Cosx<br />
⎝<br />
⎠ Cosx<br />
M = 3 (3Senx – 4 Sen 3 x) – 4 Sen 3 3x<br />
M = 3 Sen3x – 4 Sen33x = Sen 9x<br />
1. Reducir<br />
A = 2 Cos2x Cosx – Cosx<br />
2 Cos2x Senx + Senx<br />
Resolución:<br />
Cosx(2Cos2x −1)<br />
A =<br />
Senx(2Cos2x + 1)<br />
=<br />
Cos3x<br />
Sen3x<br />
=<br />
Ctg3x<br />
2. Si Tan3x = 11Tanx Hallar cos “2x”<br />
Resolución:<br />
Sen3x 11Senx Senx(2Cos2x + 1)<br />
= →<br />
=<br />
Cos3x Cosx Cosx(2Cos2x −1)<br />
4Cos2x<br />
2<br />
=<br />
12<br />
10<br />
→ Cos2x =<br />
3<br />
5<br />
senx<br />
11<br />
cos x<br />
CUESTIONARIO DESARROLLADO