firetiger2815
firetiger2815 firetiger2815
  • 11-05-2021
  • Mathematics
contestada

Find the angle between u = <2,-1>​, and v​ = <5,-2>, to the nearest tenth of a degree.

Respuesta :

erekiya16 erekiya16
  • 11-05-2021

Answer:

is there a graph mark me brainliest

Step-by-step explanation:

If θ is the angle between two vectors u and v, then cosθ = (u·v) / [llull llvll]

u·v = (2)(3) + (-4)(-8) = 38

llull = √[(2)2 + (-4)2] = √20 llvll = √[(3)2+(-8)2] = √73

So, cosθ = 38 / [√1460]

= 0.9945

θ = Cos-1(0.9945) ≈ 6.0°

Answer Link

Otras preguntas

A gas has a volume of 590 mL at a temperature of –55.0 C. What volume will the gas occupy at 30.0 C?
Which of these sentences gives the best description of the American identity? a. America is a melting pot of people of diverse ethnicities who share the common
Find the exact value of sin-1 (-square root 3/2). Write your answer in radians in terms of pi.
Cuánto tiempo hace que estudias español? Question 21 (Essay Worth 3 points) ¿Cuánto tiempo hace que usas la computadora? Question 22 (Essay Worth 3 points) ¿C
what is the prime factorization of 1024 in exponential form?
In a circle centered at point O, the ratio of the area of sector AOB to the area of the circle is 3/5 . What is the approximate measure, in radians, of the cent
The products of the neutralization reaction between HNO3(aq) and Ca(OH)2(aq) are: A. Ca(NO3)2 + 2H2O. B. CaNO3 + 2H2O. C. CaNO3 + H2O.
what is the simplest form of 1 7/90
Find the exponential function f(x)=Ca^x whose graph goes through the points (0,4) and (3,32).
does 0.06 * 1,000 equal 60