Asked by varsha
+cos 255+sin 165=
Answers
Answered by
Damon
-cos 75 + sin 15
cos x = sin(90-x)
cos 75 = sin (15
so
-sin 15 + sin 15 = 0
cos x = sin(90-x)
cos 75 = sin (15
so
-sin 15 + sin 15 = 0
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