3 years ago

Explain which trig functions and identities produce circles, ellipses and hyperbolas.

1 answer:

7 0

Note that we can also write equations for circles, ellipses, and hyperbolas in terms of cos and sin, and other trigonometric functions; there are examples of these ...

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What is the best approximation of the surface area of this right cone

Tatiana [17]

Use the formula for the surface area of a right cone:

$\sf A=\pi rs+\pi r^2$

Where 'r' is the radius and 's' is the slant height, plug in what we know(use 3.14 to approximate for pi):

$\sf A=(3.14)(12)(15)+(3.14)(12)^2$

Multiply and simplify exponent:

$\sf A=565.2+(3.14)(144)$

Multiply:

$\sf A=565.2+452.16$

Add, round to the nearest whole number:

$\boxed{\sf A\approx 1017~cm^2}$

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Sophie [7]

Answer:

540°

Step-by-step explanation:

Formula: note that n means nr of sides

(n-2)×180°

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3950 is in between
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