Mathematics, 10.11.2020 14:00 jamaiciaw6
If sina+sinb=x,
cosa+cosb=y,
prove that cos(a-b)=(x^2-y^2)/(x^2+y^2)
Answers: 2
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Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on
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Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$
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Mathematics, 21.06.2019 22:00
The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen β- z-score
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Mathematics, 21.06.2019 22:30
Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?
Answers: 1
If sina+sinb=x,
cosa+cosb=y,
prove that cos(a-b)=(x^2-y^2)/(x^2+y^2)...
cosa+cosb=y,
prove that cos(a-b)=(x^2-y^2)/(x^2+y^2)...
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