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# Help in trig Tweet

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1. Help in trig
When cot(theta)=0, sec(theta)=0, and cosec(theta)=0, does that mean tan(theta)=0, cos(theta)=0, and sin(theta)=0 respectively??

Thanks
2. Re: Help in trig
No it doesn't.

cot(x) = 1/tan(x), if you were correct then 0 = 1/0
sec(x) = 0 implies 1/cos(x) = 0, not possible, similar for cosec.
3. Re: Help in trig
Try drawing and and you tell me where they = 0

If you think about it this was

for this to equal 0 would need to be infinity. Which can not happen. Same with Cos and Sec.

as but your calculator will say math error since
Last edited by Tomcrease; 13-06-2012 at 16:29.
4. Re: Help in trig
(Original post by Tomcrease)
Try drawing and and you tell me where they = 0

If you think about it this was

for this to equal 0 would need to be infinity. Which can not happen. Same with Cos and Sec.

as but your calculator will say math error since
So when this is the case what will be the angles? For cosec(theta) = 0 , this is when sin(theta) = 0??
Last edited by nazgul60; 13-06-2012 at 18:48.
5. Re: Help in trig
(Original post by Tomcrease)
Try drawing and and you tell me where they = 0

For sec(theta):Pie/2 , 3pie/2,
For cosec(theta): pie,2Pie