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Ivanshal [37]
3 years ago
5

2. The lengths of the sides of a triangle are 4cm, 5cm and 6cm. Find, in degrees to one decimal

Mathematics
1 answer:
aivan3 [116]3 years ago
4 0

Answer:

82.8 degrees.

Step-by-step explanation:

The largest angle is opposite the longest side.

So we find the angle opposite the 6cm line using The Cosine Rule:

6^2 = 4^2 + 5^2 - 2.4.5 cos A

cos A = (6^2 - 4^2 - 5^2) / (-2*4*5)

= -5/ -40

=  0.125.

So m angle A = 82.819 degrees.

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Dmitrij [34]

el triangulo que forma el radio es un triangulo equilátero y por lo tanto el lado del hexágono sera  de la misma medida que el radio:

lado = radio = 2 cm

como hay 6 lados, lo multiplicamos por 6 :

2x6 = 12 cm

entonces el perímetro del hexágono es 12 cm

Saludos¡

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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B (3, 5)

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