The polar form of the complex number  is
 is 
Further explanation:
The complex number is 
The polar form of the complex number can be expressed as follows,

Here, r is the modulus of the complex number and  is the argument or angle of complex number.
 is the argument or angle of complex number.
Explanation:
The given complex number is 
The value of a is 7 and the value of b is 
The value of r can be obtained as follows,

The angle can be obtained as follows,

The angle lies in the fourth quadrant as value of  is negative and value of
 is negative and value of  a is positive.
 a is positive.
The angle can be obtained as follows,

The polar form of the complex number  is
 is 
Kindly refer to the image attached.
Learn more:
1. Learn more about inverse of the functionhttps://brainly.com/question/1632445.
2. Learn more about equation of circle brainly.com/question/1506955.
3. Learn more about range and domain of the function brainly.com/question/3412497
Answer details:
Grade: Middle School
Subject: Mathematics
Chapter: Arithmetic Sequence
Keywords: complex numbers, imaginary roots, polar form, 7-7i, general form, argument, coordinate.