The polar coordinate equation ρ = cos θ is transformed into rectangular coordinate system, and the equation is

The polar coordinate equation ρ = cos θ is transformed into rectangular coordinate system, and the equation is

ρ=cosθ
ρ^2=ρcosθ
Then x ^ 2 + y ^ 2 = x
So (x-1 / 2) ^ 2 + y ^ 2 = 1 / 4
It's a circle equation
Multiply both sides by P, P ^ 2 = PCOS θ
X ^ 2 + y ^ 2 = x, you need to know the connection between the two coordinate systems. In polar coordinates, P is going to be with cos, sin, P
How to transform polar coordinate r = 1 + cos a into rectangular coordinate system
r=1+cosa
r^2=r+rcosa
That is, x ^ 2 + y ^ 2 = root (x ^ 2 + y ^ 2) + X
The polar coordinate equation P = 2Sin θ + cos θ is transformed into rectangular coordinate equation
p^2=2psinθ+pcosθ
x^2+y^2=2y+x
.
The formula used is as follows
p^2=x^2+y^2
pcosθ=x
psinθ=y
Two times ρ
ρ²=2ρsinθ+ρcosθ
So x & sup2; + Y & sup2; = 2Y + X
Multiply the two sides by ρ to get ρ & sup2; = 2 ρ sin θ + ρ cos θ, so x & sup2; + Y & sup2; = 2Y + X, so (x-1 / 2) ^ 2 + (Y-1) ^ 2 = 5 / 4. You can't figure out the math problem. Get a mathematical know it all!
The polar coordinate equation ρ cos θ - ρ = 0 is transformed into rectangular coordinates
I'm sorry for missing a little bit
ρ²cosθ-ρ=0
ρ²cosθ-ρ=0
ρcosθ=1
x=ρcosθ=1
y=ρsinθ=0
(1,0)
y＝0
x> (=) 0, y = 0, x, axis positive half axis (maybe add origin, which depends on whether polar coordinates contain definition of ρ = 0)
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Root sign (x ^ 2 + y ^ 2) (x-1) = 0
X = 1 or (0,0) (same as above)
Using x = ρ cos θ, ρ ^ 2 = x ^ 2 + y ^ 2, the rectangular coordinate is y = 0
How many kilowatts is one horsepower
A horse is equal to 0.735kw, equal to 735w, horsepower is the common saying of power, the horse is the unit
One thousand watts equals 1.36 horsepower
How many square decimeters is 1.59 square meters equal to?
1.59 square meters = 159 square decimeters
1 square meter = 100 square decimeter
1 square meter = 100 square decimeter = 10000 square millimeter
1.59 square meters = 159 square decimeters
1 square meter = 100 square decimeter
One hundred and fifty-nine
From the two places, the speed of Jack a and Jack B are two times faster than that of Jack a and Jack B respectively?
The speed sum of the two is: 48 / 2 = 24 (km / h)
Because Doraemon is twice as fast as Jack,
So Jack's speed is: 24 / (2 + 1) = 8 (km / h)
The speed of Doraemon is 8 km / h
48/2=24
24(2+1)=8
8*2=16
48-（2*2）=44
Let Jack's speed be x, and Doraemon's speed be 2x
(X+ 2X) X2=48
3x X2=48
6X=48
X=8
Doraemon's speed is 2x8 = 16 km
Jack's speed is eight kilometers
A: Doraemon's speed is 16 kilometers and Jack's is 8 kilometers.
Xiaogang and Xiaoqiang are on the 400 meter circular track, starting from the same place. Xiaogang runs 4.5 meters per second, Xiaoqiang runs 5.5 meters per second. How many seconds after starting, do they meet for the first time?
400 ÷ (5.5 + 4.5) = 400 △ 10, = 40 (seconds). Answer: 40 seconds after departure, they met for the first time
How much horsepower is a kilowatt
Conversion Tables
1kW = 1.3596216173039 metric horsepower (HP)
1.37 question: Thank you
How many square decimeters and centimeters is one square meter
1 square meter = 10 * 10 = 100 square decimeter = 100 * 100 = 10000 square centimeter;