sunshineandsweets sunshineandsweets

25-05-2017
Mathematics

contestada

If the largest angle of a triangle is 120° and it is included between sides of 1.5 and 0.5, then to the nearest 10th the largest side of the triangle is what?

Respuesta :

mreijepatmat mreijepatmat

06-06-2017

Just apply the cosine law:
Let AB, be the side opposed to the angle 120°

AB² = (05)² +(1.5)² -2(0.5)(1.5).cos(120°). But we know that cos(120°) = -1/2
Then:

AB² = 0.25 + 2.25 + 0.75
AB² = 3.25

And AB =√3.25 = 1.8

Answer Link

Otras preguntas

Evaluate the implications of the basic 'economic problem'

which era spanned from 600 B.C.E to 600 C.E

Independence from railroads and banks is one way that farming in the United States changed in the late 1800s. a. True b. False

how many 20's are in 4,000

what does the palace of knossos tell us about minoan civilization

On a soccer team, 8 out of 19 players surveyed say they had two or more siblings. The league has 570 players. Which is the best prediction of the number of play

drawfism and digantism are growth disorders.which gland might be malfunctioning with these two disorders

A pencil is rolled off a table of height 0.92 m. If it has horizontal speed pf 1.4 m/s, how long does it take the pencil to reach the ground?

Which feature is a characteristic of a ballad ? 1) everyday language ordinarily used by most people 2) narrative verse set to music 3) narration through dial

large ecosystems with their own climate ,soil,plants,animals-fou in different parts Of the world are called what?