Question

Hello do you think you could help me with two problems please?

Answer 1

SOLUTION FOR NUMBER 18

Step-by-step explanation:

To convert from Cartesian coordinates to polar coordinates to, you can use:

`\begin{gathered} (x,y)\rightarrow(r,\theta) \\ where; \\ r=√(x^2+y^2) \\ \theta=tan^(-1)((y)/(x)) \end{gathered}`
`\begin{gathered} r=√(2^2+4^2)=√(20)=2√(5) \\ \theta=tan^(-1)((4)/(2))=63.43\degree \end{gathered}`
`\begin{gathered} The\text{ polar coordinates is;} \\ (r,\theta)=(2√(5),\text{ 63.43}\degree) \end{gathered}`