If you enter cos2 0.7 and sin2 0.7 into your calculator, you get these numbers: cos2 0.7
Chapter 4, Problem 1(choose chapter or problem)
If you enter cos2 0.7 and sin2 0.7 into your calculator, you get these numbers: cos2 0.7 = 0.5849835715 sin2 0.7 = 0.4150164285 Without using your calculator, do the addition. What do you notice?
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