Answer:
The domain is all real numbers less than or equal to two-third
Step-by-step explanation:
<u><em>The question in English is</em></u>
Determine the domain of the function f :D→R, 
we know that
The radicand of the function must be greater than or equal to zero
so
Solve the inequality for x
subtract 2 both sides
Multiply by -1 both sides
Divide by 3 both sides
The solution is the interval ----> (-∞,2/3]
therefore
The domain is all real numbers less than or equal to two-third
Answer:
v ≈ (3.28512, 20.74146)
Step-by-step explanation:
v = 21(cos(81°), sin(81°))
v ≈ (3.28512, 20.74146) . . . . (x, y) components
The notation varies among authors. The vector can be written as ...
(r, θ) = (21, 81°)
r∠θ = 21∠81°
r cis θ = 21 cis 81°
v = 21·e^(i·9π/20)
(x, y) ≈ (3.28512, 20.74146)
v = 3.28512i +20.74146j . . . . perhaps this is the vector notation you want (i and j are unit vectors in the x- and y-directions, respectively)
You’re taking about comparison, so there isn’t a definite answer. The answer is undefined or N/A
2.9 x 10^4 I hope this helps :)
Answer:
cos(A) = adjacent side / hypotenuse
= 4/5
