Hannrowliasi
Hannrowliasi Hannrowliasi
  • 18-07-2016
  • Mathematics
contestada

Find two unit vectors that make an angle of 60° with v = ‹6, 8›. Give your answers correct to three decimal places.

Respuesta :

meerkat18
meerkat18 meerkat18
  • 19-07-2016
We are given with an angle 60° with v = (6, 8) 
Then x^2+y^2=1 
Also a.v=a v cos60 
a.v=1*10*0,5=5 

Since a.v=6x+8y ,so 
6x+8y=5 (2) 

The equations are 
x^2+y^2=1  and 6x+8y=5  

We substitute 2 to 1, x^2 + [(5-6x)/8]^2 = 1
x then is equal to 0.9928 and y is equal to 0.12
Answer Link

Otras preguntas

Give an example in which you need to find the perimeter of a real-life object.
4. When we adopted the cutest puppy at the animal shelter. fragment run-on complete sentence​
The study of the production and distribution of goods and services and their management is:
Having hard time with slope !
ASAPP Those long sleepless nights Or awakening from dream I peer over my blankets in fear at the menacing midnight world. 5 A little imagination can be a danger
A blueprint of a barn is shown. The scale is 5 inches = 8 feet. What is the actual area of the barn? A. 500 ft2 B. 720 ft2 C. 1280 ft2 D. 3125 ft2
14. Which of the following will give you an inaccurate pulse check? A. Count the heart beats for one minute. B. Count the heart beats for 10 seconds then multip
What is the slope of a line with points of (-2,0) (2,1)
Does the following mapping diagram represent a function? A. Yes B. No. C. Not enough information
Which country claimed this land? France Spain Britain