import random

def monte_carlo(trials, test):
    count = 0
    
    for i in range(trials):
        x = random.random()
        y = random.random()
        
        if test(x, y):
            count += 1
            
    return count / trials

def in_triangle(x,y):
    return x + y < 1

def in_circle(x,y):
    return x**2 + y**2 < 1