15. The original coordinates of the point in polor coordinates are a. X’=r cos (Ф +ϴ) and Y’=r cos (Ф +ϴ) b. X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ) c. X’=r cos (Ф -ϴ) and Y’=r cos (Ф -ϴ) d. X’=r cos (Ф +ϴ) and Y’=r sin (Ф -ϴ)
Option : B , Explanation -The original coordinates of the point in polor coordinates are X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ).
