Engineering Board Exam Reviewer · Polar Coordinates · medium

Express the line x=4 in polar form.

1. r=4
2. r=4
3. r=4
4. r=4

Answer

C. r=4

Solution

Substitute x=r : r =4 r=4 .

More Polar Coordinates questions

1. Find the eccentricity of the conic r=6/2+ .
2. Identify the conic r=3/1+ .
3. Find the distance between the polar points (3,30°) and (5,90°).
4. Convert the polar equation r=4 to rectangular form.
5. Convert the rectangular point (-3,3) to polar coordinates (r, ) with r>0 and 0°≤ <360°.
6. Convert the polar point (4,60°) to rectangular coordinates.
7. Find the point of intersection, with 0°< <90°, of the curves r=2 and r=4 .

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