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2 years ago

Helppppppppppppp helppppppppppppp

Mathematics

2 answers:

AlekseyPX2 years ago

6 0

Answer: 2

Step-by-step explanation:

pochemuha2 years ago

4 0

LK = UW 

scale of factor is 2 

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They forget to say "not to scale". I'm guessing this is trig because I don't see another way to do it.

Let's consider x=chord PQ first. By the Law of Cosines

$x^2 = 3^2 + 5^2 - 2(3)(5) \cos 81^\circ = 34 - 30\cos 81^\circ$

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$\cos B = \dfrac{162 - x^2}{162} = 1 - \dfrac{x^2}{162}$

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The area of the circle is the fraction given by the angle,

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3 years ago

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