Answer:
Step-by-step explanation:
(x-6)² + y²-8y = 0
Put the equation into center-radius form.
complete the square
coefficient of the y term: -8
divide it in half: -4
square it: (-4)² = 4²
add 4² to both sides to complete the square and keep the equation balanced:
(x-6)² + (y²-8y+4²) = 4²
(x-6)² + ( y-4)² = 4²
center (6,4)
radius 4
Answer:
20
Step-by-step explanation:
Let the number of sides be n
One exterior angle = 360/n
Exterior angle + interior angle = 180
Interior angle = 180 - Exterior angle
= 180 - 360/n
Sum of interior angle = n(180 - 360/n) = 3240
n(180 - 360/n) = 3240
180n - 360 = 3240
180n = 3240 - 360
= 3600
n = 3600/180
= 20
I believe the answer is,
As an improper fraction
(numerator larger than denominator):
1,760/14 = 880/7
As a mixed number (mixed fraction)
(a whole number and a proper fraction):
1,760/14 = 125 5/7
As a decimal number:
1,760/14 ≈ 125.71
As a percentage:
1,760/14 ≈ 12,571.43%
Sin A=Cos (90º-A)
Then:
sin 30º=cos (90º-30º)=Cos 60º=1/2
Answer: cos 60º=1/2
