From 76bc94d35517116c7210b4843f935646084697a5 Mon Sep 17 00:00:00 2001
From: Lavanya_Bhushan_Talele <lavanya.bhushan.talele@gmail.com>
Date: Thu, 21 May 2026 00:48:08 +0530
Subject: [PATCH] feat: added basic trigonometry functions

---
 math/Simple-Calculator/Simple-Calculator.py | 78 ++++++++++++++++++++-
 1 file changed, 76 insertions(+), 2 deletions(-)

diff --git a/math/Simple-Calculator/Simple-Calculator.py b/math/Simple-Calculator/Simple-Calculator.py
index 83a67c8..599740c 100644
--- a/math/Simple-Calculator/Simple-Calculator.py
+++ b/math/Simple-Calculator/Simple-Calculator.py
@@ -1,3 +1,7 @@
+import math
+
+from matplotlib.pylab import angle
+
 class Calculator:
     def __init__(self):
         pass 
@@ -13,11 +17,17 @@ def start_calculation(self):
         print('7. Power')
         print('8. Factorial')
         print('9. Square root')
-        print('10. Exit')
+        print('10. Sine')
+        print('11. Cosine')
+        print('12. Tangent')
+        print('13. Cotangent')
+        print('14. Secant')
+        print('15. Cosecant')
+        print('16. Exit')
 
         while True:
             try:
-                user_input = int(input('Enter your choice to calculate(1-10): '))
+                user_input = int(input('Enter your choice to calculate(1-16): '))
                 if user_input == 1:
                     self.addition()
                 elif user_input == 2:
@@ -37,6 +47,18 @@ def start_calculation(self):
                 elif user_input == 9:
                     self.sqrt()
                 elif user_input == 10:
+                    self.sine()
+                elif user_input == 11:
+                    self.cosine()
+                elif user_input == 12:
+                    self.tangent()
+                elif user_input == 13:
+                    self.cotangent()
+                elif user_input == 14:
+                    self.secant()
+                elif user_input == 15:
+                    self.cosecant()
+                elif user_input == 16:
                     print('Goodbye! Have a good day.')
                     break
                 else:
@@ -49,6 +71,12 @@ def start_calculation(self):
             except Exception as e:
                 print(f'Something went wrong: {e}')
 
+    def clean(self, x, eps=1e-10):
+        if abs(x) < eps:
+            return 0.0
+        return x
+
+
     def addition(self):
         a = int(input('enter first value: '))
         b = int(input('enter second value: '))
@@ -103,7 +131,53 @@ def sqrt(self):
         sqrt = num ** 0.5
         print(f"Square root of {num} : {sqrt}")
 
+    def sine(self):
+        angle = float(input("Enter the angle in degrees: "))
+        rads = math.radians(angle)
+        sin_val = self.clean(math.sin(rads))
+        print(f"Sine of {angle} degrees is: {sin_val}")
+
+    def cosine(self):
+        angle = float(input("Enter the angle in degrees: "))
+        rads = math.radians(angle)
+        cos_val = self.clean(math.cos(rads))
+        print(f"Cosine of {angle} degrees is: {cos_val}")
+
+    def tangent(self):
+        angle = float(input("Enter the angle in degrees: "))
+        rads = math.radians(angle)
+        tan_val = self.clean(math.tan(rads))
+        print(f"Tangent of {angle} degrees is: {tan_val}")
+
+    def cotangent(self):
+        angle = float(input("Enter the angle in degrees: "))
+        rads = math.radians(angle)
+        tan_val = self.clean(math.tan(rads))
+        if tan_val != 0:
+            cot_val = 1 / tan_val
+            print(f"Cotangent of {angle} degrees is: {cot_val}")
+        else:
+            print(f"Cotangent of {angle} degrees is undefined.")
+
+    def secant(self):
+        angle = float(input("Enter the angle in degrees: "))
+        rads = math.radians(angle)
+        cos_val = self.clean(math.cos(rads))
+        if cos_val != 0:
+            sec_val = 1 / cos_val
+            print(f"Secant of {angle} degrees is: {sec_val}")
+        else:
+            print(f"Secant of {angle} degrees is undefined.")
 
+    def cosecant(self):
+        angle = float(input("Enter the angle in degrees: "))
+        rads = math.radians(angle)
+        sin_val = self.clean(math.sin(rads))
+        if sin_val != 0:
+            csc_val = 1 / sin_val
+            print(f"Cosecant of {angle} degrees is: {csc_val}")
+        else:
+            print(f"Cosecant of {angle} degrees is undefined.")
 
 cal = Calculator()
 cal.start_calculation()