# I dont think drawing a picture will help me drwls

Which expression is equivalent to tan theta-sec theta/sin theta?
A)-cot theta
B)cot theta
C)tan theta-cot theta
D)tan theta-sec^2theta

just tell me what I need to know to set it up

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3. 👁 142
1. Thank you for using the Jiskha Homework Help Forum. If it's Math, I doubt I can help you, but try these sites:

1. http://mb.sparknotes.com/mb.epl?b=986&m=1268516&p=4&t=358012&w=1

2. (Physics post): http://www.physicsforums.com/archive/index.php/t-58628.html

3. (Trig, part II of #3): http://www.physicsforums.com/archive/index.php/t-159316.html

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2. trig identities are like in a different language for me. can I please get at least 1 step to get started. I looked at all the sites about it but if I don't understand what im looking at it does no good, I know how to read I just don't get it.

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posted by Jon
3. Notation: sin(theta) = s; cos(theta) = c.

Then tan(theta) = s/c and
sec(theta) = 1/c

We can write:

s/c - 1/(cs) = (s^2 - 1)/(cs) = -c/s = Answer A

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4. I understand that a little thank you sooo much for explaining it.

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posted by Jon
5. if you ar having issues read it again or 3 times . you can also try to contact a friend

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posted by kain

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