diff --git a/src/main/py/trigonometry.py b/src/main/py/trigonometry.py
index c2e6635..b33c8bb 100644
--- a/src/main/py/trigonometry.py
+++ b/src/main/py/trigonometry.py
@@ -1,15 +1,15 @@
 import math
 from src.main.py.logarithmic_and_expo_and_root_calculations import potentiate
-
+from src.main.py.primitive_calculations import *
 def pi_approx_leibniz(precision):
     if precision < 0:
         return -1
     result = 0
     for i in range(precision):
         num = potentiate(-1, i)
-        denom = 2*i + 1
-        result += num/denom
-    return result * 4
+        denom = add(1, multiply(2,i))
+        result = add(result, divide(num, denom))
+    return multiply(result, 4)
 
 def rad2deg(radNumber):
     return (radNumber * 180) / math.pi
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