Address Tab's comments on PR #3761

#3761 (review)

Author: AmeliaBR

css-values-4/Overview.bs

@@ -2478,7 +2478,7 @@ Trigonometric Functions: ''sin()'', ''cos()'', ''tan()'', ''asin()'', ''acos()''
 	or an <<angle>>,
 	and compute their corresponding function
 	by interpreting the result of their argument as radians.
-	(That is, ''sin(45deg)'', ''sin(.125turn)'', and ''sin(3.14159 / 4 * 1rad)''
+	(That is, ''sin(45deg)'', ''sin(.125turn)'', and ''sin(3.14159 / 4)''
 	all represent the same value,
 	approximately ''.707''.)
 	They all represent a <<number>>;
@@ -2509,12 +2509,12 @@ Trigonometric Functions: ''sin()'', ''cos()'', ''tan()'', ''asin()'', ''acos()''
 	(that is, greater than ''-180deg'', and less than or equal to ''180deg'').
 
 	Note: ''atan2(Y, X)'' is <em>generally</em> equivalent to ''atan(Y / X)'',
-	but it gives a better answer when the point in question includes negative components on one dimension.
+	but it gives a better answer when the point in question may include negative components.
 	''atan2(1, -1)'', corresponding to the point (-1, 1),
 	returns ''135deg'',
 	distinct from ''atan2(-1, 1)'', corresponding to the point (1, -1),
 	which returns ''-45deg''.
-	In contrast, as ''atan(1 / -1)'' and ''atan(-1 / 1)'' both return''-45deg'',
+	In contrast, ''atan(1 / -1)'' and ''atan(-1 / 1)'' both return''-45deg'',
 	because the internal calculation resolves to ''-1'' for both.