Datrys ar gyfer a
\left\{\begin{matrix}a=\frac{r}{2\cos(\theta )}\text{, }&\nexists n_{1}\in \mathrm{Z}\text{ : }\theta =\pi n_{1}+\frac{\pi }{2}\\a\in \mathrm{R}\text{, }&r=0\text{ and }\exists n_{1}\in \mathrm{Z}\text{ : }\theta =\pi n_{1}+\frac{\pi }{2}\end{matrix}\right.
Datrys ar gyfer r
r=2a\cos(\theta )
Graff
Rhannu
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2a\cos(\theta )=r
Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.
2\cos(\theta )a=r
Mae'r hafaliad yn y ffurf safonol.
\frac{2\cos(\theta )a}{2\cos(\theta )}=\frac{r}{2\cos(\theta )}
Rhannu’r ddwy ochr â 2\cos(\theta ).
a=\frac{r}{2\cos(\theta )}
Mae rhannu â 2\cos(\theta ) yn dad-wneud lluosi â 2\cos(\theta ).
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