96xgcv4cei 96xgcv4cei
  • 01-02-2021
  • Mathematics
contestada

Use the Law of Cosines to solve for the side BC. Round your answer to the point
nearest whole number. Write the value only *

Use the Law of Cosines to solve for the side BC Round your answer to the point nearest whole number Write the value only class=

Respuesta :

763396
763396 763396
  • 01-02-2021

Answer:

BC = 50

Step-by-step explanation:

Law of Cosines:

c^2 = a^2 + b^2 - 2ab*cosy (c is BC)

c^2 = 30^2 + 21^2 - 2(30)(21)cos123

c^2 = 900 + 441 - 1260*(-0.888)

c^2 = 1341 - (-1118.841)

c^2 = 2459.841

c = 49.597

c = 50

Answer Link

Otras preguntas

solve this problem step by step. 2x^3+17x^2+30x
Which of the following is NOT one of the 6 basic nutrients? food minerals vitamins water
five reasons why Ghana is not fully sell reliance country​
I need help with these two problems ASAP. Please show your work:)
help pls i'll mark u brainliest
What is the solution to log 2(9x)-log base 2 3= 3
A bird was sitting 88 meters from the base of an oak tree. It then flew in a straight line 99 meters to reach the top of the tree. ​How tall is the tree? ​The
Read the following excerpt from a health record: Plan Recommendation: We need to perform an endoscopic retrograde cholangiopancreatogram or magnetic resonance c
A kind of tempory magnet​
Becky has 4 1/2 cups of ice cream. If each ice cream scoop is 1/2 cup, how many scoops of ice cream can she make? Simplify your answer.