Calculr : (tgx + 1)cosx - cosx?
Calculr : (tgx + 1)cosx - cosx.
Calculr : (tgx + 1)cosx - cosx.
En resumen
<img src="https://tex.z-dn.net/?
<img src="https://tex.z-dn.net/?f=%7B%28tanx%2B1%29cosx-cosx%3D%7D%5C%5C%5C%5C%7Bcosx%5B%28tanx%2B1%29-1%5D%3D%7D%5C%5C%5C%5C%7Bcosx%28tanx%2B1-1%29%3D%7D%5C%5C%5C%5C%7Bcosx%28tanx%29%3D%7D%5C%5C%5C%5C%7Bcosx%5Cleft%28%5Cfrac%7Bsenx%7D%7Bcosx%7D%5Cright%29%3D%7D%5C%5C%5C%5C%7B%5Cboxed%7Bsenx%7D%7D%5C%5C%5C%5C%7B%5Cmathbf%7Bsalu2.%5C%20%3A%29%7D%7D%5C%5C%7B%5Cmathbf%7BWellington%7D%7D" />.
Tgx = senx / cosx tgx. Senx + cosx = secx senx - - - - (senx) + cosx = secx cosx senx ^ 2 - - - - - - + cosx = secx cosx identidad trigonometrica senx ^ 2 + cosx ^ 2 = 1 senx ^ 2 + cosx ^ 2 - - - - - - - - - - - - - =…
Respuesta : tgx = senx / cosxctgx = cosx / senxcosx. Senx / cosx (cosx / senx + senx / cosx)senx (cos2x + sen2x / senx. Cosx)y la respuesta es 1 / cosx.