Sophiapaz1 Sophiapaz1

03-07-2019
Mathematics

contestada

Find BC please in the picture

Find BC please in the picture class=

Respuesta :

aguilerapablo03 aguilerapablo03

03-07-2019

B. 25 Km. The measure of BC is 25 km.

The easiest way to solve this problem is using the cosine theorem c = √a²+b²-2ab*cos A.

BC = √AC²+AB²-2(AC)(AB)*cos A

BC = √(21km)²+(14km)²-2(21km)(14km)*cos 89°

BC = √441km²+196km²-588km²*(0.017)

BC =√637km²-10.26km²

BC = √636.74km²

BC = 25.03km ≅ 25

Answer Link

Otras preguntas

how did physical geography influence the lives of the early Greeks? Please someone help me

Which weighs more 2.5 pounds of rocks or 40 ounces of feathers

few questions explain too, very confused PLEASE HELP 1. twice the difference between a number and ten 2. if 5 is subtracted from twice a number the result is 11

Time is always calculated from which degree of longitude? A. 0 B. 60 C. 90 D. 180

which innovation would best address a challenge facing modern japan?

What is 14.613 rounded to the nearest tenth?

What is probably this person's job? She brought me a

How do you say "Hello" in Swahili

1.What Canadian landform covers about half of the country? A)the Interior Plains B) the Canadian Shield C) the St. Lawrence Lowlands D) the Yukon Territory 2.Wh

Is there a prime number that ends in zero?