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need help im stuck
i need to prove that
(1tan x)(1+tan x) = (12sin^2x)(sec^2x)
 one year ago
 one year ago
need help im stuck i need to prove that (1tan x)(1+tan x) = (12sin^2x)(sec^2x)
 one year ago
 one year ago

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micaBest ResponseYou've already chosen the best response.0
i forgot to mention that i have to start on the left side x.x
 one year ago

micaBest ResponseYou've already chosen the best response.0
i original problem is prove: cos2x = 1  tan^2x  1+tan^2x
 one year ago

jiteshmeghwal9Best ResponseYou've already chosen the best response.1
\[(1\frac{sinx}{cosx}){(1+\frac{sinx}{cosx})}\]\[(1\frac{\sin^2x}{\cos^2x})\]\[1\sin^2x \times \frac{1}{\cos^2x}\]\[(1\sin^2x)(\sec^2x).\]
 one year ago

micaBest ResponseYou've already chosen the best response.0
aaaaaaaaaa lol gotcha xD thank you
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
\[(1+\tan(x))(1\tan(x))\] \[1\tan^2(x)\] \[1\frac{\sin^2(x)}{\cos^2(x)}\] He is right until this point.
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
Hint 1: Combine the fractions
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
Hint 2: Rewrite the numerator in terms of sin by using the Pythagorean identity, \[\cos^2(x)=1\sin^2(x)\]
 one year ago

jiteshmeghwal9Best ResponseYou've already chosen the best response.1
dw:1352617552352:dw
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
Yes but that totally is not the same as (1sin^2(x))(sec^2(x))
 one year ago

jiteshmeghwal9Best ResponseYou've already chosen the best response.1
well, i can be wrong here because i'm only studying in middle school
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
Recall the distributive property a(b+c)=ab+ac
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
1 is not being multiplied by sec^2(x) so you can not write (1sin^2(x))(sec^2(x))
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
@mica you leave already?
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
Try not to give the full solution next time either even though you didn't do it this time because did it incorrectly anyways.
 one year ago

jiteshmeghwal9Best ResponseYou've already chosen the best response.1
He isn't worrying about his question :)
 one year ago

jiteshmeghwal9Best ResponseYou've already chosen the best response.1
Okay mam sorry. Thanx for the advice :)
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
Scenario 1: He just copied what you had and left because he got what he thought he wanted. Scenario 2: He had chores.
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
We don't want Scenario 1. We want people to actually learn.
 one year ago

03225186213Best ResponseYou've already chosen the best response.0
(cos^x−sin^2x)(sec^2x) cos^x=1sin^2x plug and get ans.
 one year ago
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