Another attempt at fixing sine & cosine test.

test/mjsunit/sin-cos.js

Index: test/mjsunit/sin-cos.js
===================================================================
--- test/mjsunit/sin-cos.js	(revision 2170)
+++ test/mjsunit/sin-cos.js	(working copy)
@@ -27,22 +27,15 @@
 
 // Test Math.sin and Math.cos.
 
-var input_sin = [0, Math.PI, Math.PI / 6, Math.PI / 2];
-var input_cos = [0, Math.PI, Math.PI / 6, Math.PI / 2];
+var input_sin = [0, Math.PI / 2];
+var input_cos = [0, Math.PI];
 
 var output_sin = input_sin.map(Math.sin);
-var output_cos = input_sin.map(Math.cos);
+var output_cos = input_cos.map(Math.cos);
 
-var expected_sin = [0,
-                    1.2246063538223773e-16,
-                    0.49999999999999994,
-                    1];
+var expected_sin = [0, 1];
+var expected_cos = [1, -1];
 
-var expected_cos = [1,
-                    -1,
-                    0.8660254037844387,
-                    6.123031769111886e-17];
-
 assertArrayEquals(expected_sin, output_sin, "sine");
 assertArrayEquals(expected_cos, output_cos, "cosine");