R = a cos ⁡ t i + a sin ⁡ t j + b t k displaystyle mathbf r =acos tmathbf i +asin tmathbf j +btmathbf k Accept USE OF COOKIES: We use our own and third party cookies in order to provide the best customer service and in http://toldosnauticos14615.mybloglicious.com/15134073/el-5-segundo-truco-para-helices-para-veleros