Solve: 2sin Theta - Cos Theta =0 For 0< Or = Theta < 2 Phi

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You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. Solve: 2sin theta - cos theta =0 for 0< or = theta < 2 Phi

• Thread starter SueC01
• Start date Feb 16, 2009

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SueC01

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Joined Feb 16, 2009 Messages 7 It is sad that I have spent my whole long weekend on this homework but it is what it is. With that being said this is the last problem I am stuck on. Solve: 2sin theta - cos theta =0 for 0< or = theta < 2 Phi I have 0,phi/2,phi,3phi/2 :? I have so many graphs that I don't remember which one I used. I think I might have thrown it away without thinking. Please show me which equation I should use. Thank you,Sue D

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Re: My last trig problem for today!!

SueC01 said: It is sad that I have spent my whole long weekend on this homework but it is what it is. With that being said this is the last problem I am stuck on. Solve: 2sin theta - cos theta =0 for 0< or = theta < 2 Phi I have 0,phi/2,phi,3phi/2 :? <<<Incorrect - check your problem carefully for correctness use the trig identity: \(\displaystyle \tan(\theta) \, = \frac{\sin(\theta)}{\cos(\theta)}\) As posted, you would need calculator to come up with exact measurement of the angle. I have so many graphs that I don't remember which one I used. I think I might have thrown it away without thinking. Please show me which equation I should use. Thank you,Sue Click to expand...

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SueC01

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Joined Feb 16, 2009 Messages 7 Re: My last trig problem for today!! Thank you very very much. Sue S

SueC01

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Joined Feb 16, 2009 Messages 7 Re: My last trig problem for today!! OK. Let's see if I have it right this time: Phi/3, Phi/2, 2Phi/3 and 3Phi/2 or Phi/6, Phi/2, 5Phi/6,3Phi/2 Sometimes I really wonder what I am doing........ , Sue D

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Re: My last trig problem for today!!

SueC01 said: OK. Let's see if I have it right this time: Phi/3, Phi/2, 2Phi/3 and 3Phi/2 <<<< Incorrect or Phi/6, Phi/2, 5Phi/6,3Phi/2<<<< Incorrect - assuming your problem statement was correct How did you get those - please show work if you need us to trace your mistake Sometimes I really wonder what I am doing........ , Sue Click to expand...

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SueC01

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Joined Feb 16, 2009 Messages 7 Ok. A classmate called a little while ago and we worked it out. The answers we got were 0,Phi/6,5Phi/6,Phi I pray this is right. Sue D

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SueC01 said: Ok. A classmate called a little while ago and we worked it out. The answers we got were 0,Phi/6,5Phi/6,Phi <<< Incorrect I pray this is right. Sue Click to expand...

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SueC01

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Joined Feb 16, 2009 Messages 7 He is just going to have to show us how to work it out, Thank you for all you help. I'll be back............. Sue D

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Re: My last trig problem for today!! [ Solve: 2sin theta - cos theta =0 for 0< or = theta < 2 Phi \(\displaystyle \frac{\sin(\theta)}{\cos(\theta)} \, = \, \frac{1}{2}\) \(\displaystyle \tan(\theta) \, = \, \frac{1}{2}\) ? = 26.56505118° and 206.56505118° <<< using calculator You must log in or register to reply here. Share: Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link

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