Am studying polar coordinates and need some help. i know the following conversion rules : x=rcosΔ y=rsinΔ tan Δ = y/x
r^2 = x^2+y^2.
Now my problem is how to convert from polar cordinates to rectagular coordinates.
For instance how to convert the following:
a) Δ = Alt+227 /2
b) r = sec Δ

Can you help me understand it by showing me the procedure i must follow. thanks

Question

Am studying polar coordinates and need some help.  i know the following conversion rules : x=rcos&Delta;   y=rsin&Delta;     tan &Delta; = y/x
r^2 = x^2+y^2.
Now my problem is how to convert from polar cordinates to rectagular coordinates.
For instance  how to convert the following:
a) &Delta; = Alt+227 /2
b) r = sec &Delta;

Can you help me understand it by showing me the procedure i must follow.  thanks

anonymous · Answer

sorry for my post. How do i use the mathematical symbols? How can i edit my post?

anonymous · Answer

$$a) \theta=\pi/3$$

anonymous · Answer

b)$$b) r=\sec \theta$$

anonymous · Answer

r=sec pi/3=2,
so x =2 cos pi/3 =2*1/2=1..
similarly find the value of y

anonymous · Answer

How did you get the answers; I need the procedure you followed to reach the answer

anonymous · Answer

x=r cos (theta) ,and y= r sin(theta)
and what is r???
its r=sec (theta), where theta =pi/3
so r= sec pi/3 =2
now put the values of theta and r and get the ans..