A plane intersecting a double-napped cone makes a 55° angle with the central axis. The angle between the generator and the central axis is 35°. Which conic section is formed?

For your question: "A plane intersecting a double-napped cone makes a 55° angle with the central axis. The angle between the generator and the central axis is 35°."

The conic section that is formed would be an Ellipse.

Please let me know if you have any other questions down below.

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

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step-by-step explanation: