sageblightnoceda sageblightnoceda
  • 29-01-2022
  • Mathematics
contestada

work out length of ac using cosine rule

work out length of ac using cosine rule class=

Respuesta :

jaafarkadi5 jaafarkadi5
  • 29-01-2022

Answer:

AC=14.8 cm

Step-by-step explanation:

AC^2=AB^2 +BC^2 -2(AB×BC×cos(ABC))

AC^2=7^2 +10^2 -2(7×10×cos(120))

AC^2=219

AC=sqrt(219)= 14.8 cm

Answer Link

Otras preguntas

prove that tan-1x + cot-1(x+1) = tan-1( 1 + x + X^2)
If a 143-mile trip took 5 1/2 gallons of gas, how many miles can be driven with a full tank of 14 gallons?
Find the angular velocity in radians per second of a wheel turning at 25 revolutions per minute.
How can we develop a safe enviornment around us?
What are the four steps for solving a problem? Should any other factors be accounted for when solving a problem? Should any factors be accounted for when explai
what is π to the 6th digit
if y is the principal square root of 5 what must be true?
consider the following systems of equations y=3x-7  y-3x=5  what can you conclude about the system of equations
Tanx cosx = 0i believe you have to use the cancellation method. you turn tanx into sinx/cosx times cos but i dont know where to go from there
if cos θ -sin θ =1, find θ cos θ +sin θ?
ACCESS MORE