If a= sinC + sin2C and b= cosC + cos2C,
express a^2 + b^2 in terms of cosC.
Hence prove that (a^2 + b^2)(a^2 +b^2 -3) = 2b
Trigonometry - compound angles
2008-03-01 9:46 pm
回答 (1)
2008-03-01 10:29 pm
收錄日期: 2021-04-14 19:47:46
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