![\bf \begin{cases} x=4t\implies \frac{x}{4}=\boxed{t}\\ y=t^2\\ ----------\\ y=\left( \boxed{\frac{x}{4} }\right)^2 \end{cases}\implies rsin(\theta)=\cfrac{[rcos(\theta)]^2}{4^2} \\\\\\ rsin(\theta)=\cfrac{r^2cos^2(\theta)}{16}\implies sin(\theta)=\cfrac{rcos^2(\theta)}{16}\implies 16sin(\theta)=rcos^2(\theta) \\\\\\ \cfrac{16sin(\theta)}{cos^2(\theta)}=r\implies 16\cdot\cfrac{sin(\theta)}{cos(\theta)}\cdot \cfrac{1}{cos(\theta)}=r\implies \boxed{16 tan(\theta)sec(\theta)=r}](/tpl/images/0487/5043/d2d52.png)
Idon't understand this and i'm stuck on these two problems can someone
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Mathematics, 30.01.2020 22:50 Jasten
Idon't understand this and i'm stuck on these two problems can someone
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