【tan²α+4tanα+4】/(tan²α+1)=5/2咋化简?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 02:08:30
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【tan²α+4tanα+4】/(tan²α+1)=5/2咋化简?
【tan²α+4tanα+4】/(tan²α+1)=5/2咋化简?
【tan²α+4tanα+4】/(tan²α+1)=5/2咋化简?
【tan²α+4tanα+4】/(tan²α+1)=5/2
2tan²α+8tanα+8=5tan²α+5
3tan²α-8tanα-3=0
(3tanα+1)(tanα-3)=0
tanα=-1/3或tanα=3