Question

The vertx angle of a cone is 60°.find the ratio if diameter with the height

Answer 1

............ ............

Answer 2

So it will be 30°

Tan 30° = radius / height
$\frac{1}{ \sqrt{3} } = \frac{r}{h} \\ \\ \frac{2}{ \sqrt{3} } = \frac{r \times 2}{h } \\ \\ \frac{2}{ \sqrt{3} } = \frac{d}{h} \\ \\ d:h = 2: \sqrt{3}$