3 years ago

The volume of a cube is 441cm3. Work out the length of its side rounded to 1 DP.

1 answer:

5 0

Answer:

volume of a cube = 441cm3.

l³=441cm³

l=7.6cm

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sattari [20]

The cotangent function is defined as the ratio between cosine and sine of a given angle, i.e.

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Since you can't have zero at the denominator, the cotangent function is not defined when the sine is zero.

Let's look at your option:

$\sin(90^\circ) = 1$ , so the cotangent is defined here

$\sin(180^\circ) = 0$ , so the cotangent is not defined here

$\sin(270^\circ) = -1$ , so the cotangent is defined here

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masha68 [24]

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