Applying trigonometric functions and polar coordinates on pygame

Question

how to make a program using trigonometric functions with the following output:

If the car hits the wall, the car will move backwards and change direction 45 degrees clockwise then continue moving forward and so on until the program is terminated.

I have made the program, but I feel inefficient and i didn't use the trigonometrics functions

import pygame, sys
from pygame.locals import *
pygame.init()

# Define some colors
white=(250,250,250);   whitdull=(247,247,247)


font1 = pygame.font.Font(None,150)
text1 = font1.render("Bom-bom  Car",True,white)

# preparing  the  screen
width = 1050 ; height = 600
screen = pygame.display.set_mode([width, height])
pygame.display.set_caption('Bom-bom Car')
screen.fill(whitdull) 


click_sound = pygame.mixer.Sound("click.wav")

car= pygame.image.load("Car-2.jpeg").convert_alpha()
player_image = car

#initial value
b0X = 0; b0Y = 250; direction = 2
ct = 20
clock = pygame.time.Clock()

def base(cX,cY,player_image):
    screen.fill(whitdull)
    pygame.draw.rect(screen,whitdull,[0,0,1050,600],4)

    screen.blit(text1,[150,230])
    
    
    screen.blit(player_image, [cX,cY])

    
    pygame.display.flip()
    clock.tick(ct)

   
def carMovement(b0XX,b0YY,bdirection):
    sX = 5     
    sY = 5   
    
    while True:
        if bdirection == 2 :
            player_image = car
            pX = sX
            pY = 0
            b0XX = b0XX + pX
            b0YY = b0YY + pY
            if b0XX == 970:
                sX = -sX
            if pX == -5 and b0XX == 900:
                bdirection = 3  
        elif bdirection == 3:
            player_image = pygame.transform.rotate(car, -45)
            pX = -sX
            pY = sY
            b0XX = b0XX + pX
            b0YY = b0YY + pY
            if b0XX == 970:
                sX = -sX
                sY = -sY
            if pX == -5 and b0YY == 250:
                bdirection = 4
        base(b0XX,b0YY,player_image)
    return b0XX,b0YY


while True: 
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        if event.type == pygame.MOUSEBUTTONDOWN:
            click_sound.play()
            b0X,b0Y = carMovement(b0X,b0Y,direction)
    base(b0X,b0Y,player_image)