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Edan
Questions (1)
1.Using exact values, verify that
cos 60°=1-2 sin² 30°
2 answers
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Answers (2)
BY writisng down the whole in the answer and then counting the numbers instead of doing a division problem.
This is exacly how the question goes, This is a test question. 1.Using exact values, verify that cos 60°=1-2 sin² 30°
