Spiraal: Verskil tussen weergawes
Content deleted Content added
Lyn 54:
====Sektor oppervlak====
:<math>A=\frac{1}{2}\int_{\theta_1}^{\theta_2} (r(\theta))^2\; d\theta\ .</math>
====Booglengte====
| |||
Lyn 54:
====Sektor oppervlak====
:<math>A=\frac{1}{2}\int_{\theta_1}^{\theta_2} (r(\theta))^2\; d\theta\ .</math>
====Booglengte====
| |||