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LenaWriter [7]
2 years ago
10

FIND THE CIRCUMFERENCE OF CIRCLE A! (no outside links or ill report you)

Mathematics
1 answer:
alisha [4.7K]2 years ago
3 0

The answer is 131.88

Step-by-step explanation:

because circumference is radius times 2 times pi (aka 3.14) so you do 21 times 2 = 42 times pi which is 131.88

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7 0
3 years ago
What is cos(45°)?
Andrej [43]

Answer:

\rm \dfrac{\sqrt2}{2}

Step-by-step explanation:

A right angled ∆ is given to us and we need to find out the value of cos 45° ( with rationalized denominator ) . As we know that in a right angle ∆ , the value of cosine is ,

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\rm\implies cos45^\circ=\dfrac{1(\sqrt2)}{(\sqrt2)(\sqrt2)}

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\rm\implies \boxed{\pink{\frak{ cos45^\circ=\dfrac{\sqrt2}{2} }}}

6 0
3 years ago
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