Fix spelling cos to cosine

Akshay Sharma · Akshay Sharma · commit 0e6fbd96eb2c · 2015-02-19T23:12:26.000+05:30
diff --git a/Language/Functions/Trigonometry/cos.adoc b/Language/Functions/Trigonometry/cos.adoc
@@ -12,7 +12,7 @@
 
 [float]
 === Description
-Calculates the cos of an angle (in radians). The result will be between -1 and 1.
+Calculates the cosine of an angle (in radians). The result will be between -1 and 1.
 [%hardbreaks]
 
 
