Answer:
1
Step-by-step explanation:
cos²θ (1 + tan²θ)
Use Pythagorean identity:
cos²θ (sec²θ)
1
Answer:
2
Step-by-step explanation:
2 x 4 = 8
2 x 3 = 6
Sorry I wasn't able to do more than one because I don't have time but you can look at my example.< means open cycle and the one I did is less than or equal to so its a close cycle.if you are still confused you can ask me. Hope this helps. please add brainlist
Answer:
B. y = e^(-2/x).
Step-by-step explanation:
dy/dx = 2y / x^2
Separate the variables:
x^2 dy = 2y dx
1/2 * dy/y = dx/x^2
1/2 ln y = = -1/x + C
ln y = -2/x + C
y = Ae^(-2/x) is the general solution ( where A is a constant).
Plug in the given conditions:
e = A e^(-2/-2)
e = A * e
A = 1
So the specific solution is y = e^(-2/x).
Given that:
Perimeter=194 cm
Width=w
Length, L= 4w-3
Formula for perimeter of rectangle:
P=2(L+W)
Put values
194=2(4w-3+w)
194=2(5w-3)
Divide both sides by 2.
97=5w-3
Add 3 to both sides
100=5w
w=20
So length= 4 (20) -3 = 80-3 =77 cm
and width= 20 cm
Answer: Length=77 cm and width=20 cm
