Mathematics, 18.02.2022 19:10, yasminlockser6
If sin theta/2 = 1/2 (a+ 1/a ), prove that: cos theta = - 1/2 * (a ^ 2 +1/a^2)
Answers: 1
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If sin theta/2 = 1/2 (a+ 1/a ), prove that: cos theta = - 1/2 * (a ^ 2 +1/a^2)...
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