Mathematics, 19.10.2020 14:01 smckinney6139
Prove that cos x + cos 3x + cos 5x + cos 7x = 4cos x cos 2x cos 4x
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Mathematics, 21.06.2019 20:50
Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field
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Mathematics, 21.06.2019 21:50
Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?
Answers: 1
Prove that cos x + cos 3x + cos 5x + cos 7x = 4cos x cos 2x cos 4x...
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