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Please explain how third step came with pic or by step by step explanation especially how 1-cos becomes 2sin^2theta/2 |
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Answer» ONG>ANSWER: hope this helps Step-by-step EXPLANATION: cos2A=1-2sin²A 2sin²A=1-cos2A Substitute A as thetha/2 You will get 1-cos(2thetha)=2sin²(thetha/2) |
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