Given 0<=A<=180, how many roots does the equation (sinA+1) x (tanA+3)=0 have?
Many Thanks
Maths F4- sin / cos
2007-09-10 6:22 am
回答 (1)
2007-09-10 6:30 am
✔ 最佳答案
(sinA+1) (tanA+3)=0sinA=-1 or tanA=-3
Since to when 0<A<180 , sin is + and tan have one -
so have just 1 ans
=108.4349488
收錄日期: 2021-04-13 14:56:53
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