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liubo4ka [24]
3 years ago
14

Find the area of the given circle. Round to the nearest tenth.

Mathematics
1 answer:
Paha777 [63]3 years ago
8 0
diameter=12\ ft\\\\diameter=2\ radius\\\\2r=12\ ft.\ \ \ /:2\\r=6\ ft.\\\\A=\pi r^2\\\\A=\pi\cdot6^2=36\pi\ (ft^2)\approx36\cdot3.14=113.04\ (ft^2)\approx113.0\ (ft^2)
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Exercise questions
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Answer:

2.

a)1

b)1

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Step-by-step explanation:

There's some identity trigonometric equation, which are valid for all angles,and they doesn't depends on the measure of angle!

some of em are follows:. (x is the given angle)

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You can remember these identity, its gonna help alot.

now back to question,. {x is representing angles)

for (a) sin(x)^2+cos(x)^2=1, this is true for all x, dat means that for all the angle given in question(for ,15°,30°,45°,60° and 120°),we will get 1

for(b) ,

cosec(x)^2=1+cot(x)^2

i.e, cosec(x)^2-cot(x)^2=1, again this is true for all x dat means that for all the angle given in question ,we will get 1

for (c),

sec(x)^2=1+tan(x)^2

i.e,sec(x)^2-tan(x)^2=1,again this is true for all x, dat means that for all the angle given in question ,we will get 1

✌️:)

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