Can show me how these are equal through trig identities? cosx*tanx=sinx??? How??
回答 (3)
2015-07-18 12:07 pm
cosx tanx =
cosx(sinx/cosx) =
sinx
cosx(sinx/cosx) =
sinx
2015-07-18 11:29 am
cos x sin x
--------------- = sin x
cos x
--------------- = sin x
cos x
2015-07-18 5:27 am
cosx*tanx=sinx ⇒
............sin x
cos x • ------- = sin x.................// cos x cancels with cos x in the denominator
............cos x............................// leaving you with just sin x
............sin x
cos x • ------- = sin x.................// cos x cancels with cos x in the denominator
............cos x............................// leaving you with just sin x
2015-07-18 4:43 am
tanx=sinx/cosx
so cosx*tanx=sinx
so cosx*tanx=sinx
收錄日期: 2021-05-01 15:20:09
原文連結 [永久失效]:
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