When Ehsan was preparing to make a tape from some of his favourite songs, he notices that the Hadi's song was 1 minute longer than Bonna's song and Niaj's song was 1 minute less than twice as long as Bonna's song. If the total time for these three songs is 12 minutes, how long is Niaj's song?

Created: 8 years ago | Updated: 6 months ago
Updated: 6 months ago

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Created: 6 days ago | Updated: 6 days ago
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1 - cosθ1 + cosθ
1 + sinθ1 - sinθ
1 + cosθ1 - sinθ
1 - sinθ1 + sinθ
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