List of top Engineering Mathematics Questions on Polar form of complex number

Let \( r \) and \( \theta \) be the polar coordinates defined by \( x = r \cos \theta \) and \( y = r \sin \theta \). The area of the cardioid \( r = a (1 - \cos \theta) \), \( 0 \leq \theta \leq 2\pi \), is: