JEE Main & Advanced
Mathematics
Applications of Derivatives
Question Bank
Mock Test - Application of Derivatives
question_answer
The altitude of a cone is 20 cm and its semi-vertical angle is \[30{}^\circ \]if the semi-vertical angle is increasing at the rate of \[2{}^\circ \]per second, then the radius of the base is increasing at the rate (cm/sec) of _____.