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anonymous
 one year ago
Which of the following world be an acceptable first step in simplifying the expression tanx/(1+secx)?
anonymous
 one year ago
Which of the following world be an acceptable first step in simplifying the expression tanx/(1+secx)?

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0your thoughts?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I read through the notes like 10 times and still don't understand

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440198581765:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440198631242:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0isn't it eliminating the denominator ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0hint: think of the difference of squares formula

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0You've seen this formula before hopefully a^2  b^2 = (ab)(a+b)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh yeah. I'm used to the (ab)2 but I know what you're talking about

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so the idea is that we multiply top and bottom by 1sec(x), then we get this dw:1440198998954:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440199030582:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440199066043:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440199086975:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0what is 1sec^2 equal to?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0umm , the first number to pop up in my head was 1 lol

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0look at this identity sheet http://tutorial.math.lamar.edu/pdf/Trig_Cheat_Sheet.pdf

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0look on page 2 where it says "Pythagorean Identities"

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440199398015:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440199419561:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so the original expression is equivalent to \[\Large \frac{1\sec(x)}{\tan(x)}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay, so the answer would be a ?
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