Verify that each equation is an identity. 1Hint: cos 2x = cos1x + x2.2 See Example 6 1 +
Chapter 5, Problem 70(choose chapter or problem)
Verify that each equation is an identity. 1Hint: cos 2x = cos1x + x2.2 See Example 6 1 + cos 2x - cos2 x = cos2 x
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