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mica
Group Title
need help im stuck
i need to prove that
(1tan x)(1+tan x) = (12sin^2x)(sec^2x)
 2 years ago
 2 years ago
mica Group Title
need help im stuck i need to prove that (1tan x)(1+tan x) = (12sin^2x)(sec^2x)
 2 years ago
 2 years ago

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mica Group TitleBest ResponseYou've already chosen the best response.0
i forgot to mention that i have to start on the left side x.x
 2 years ago

mica Group TitleBest ResponseYou've already chosen the best response.0
i original problem is prove: cos2x = 1  tan^2x  1+tan^2x
 2 years ago

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
\[(1\frac{sinx}{cosx}){(1+\frac{sinx}{cosx})}\]\[(1\frac{\sin^2x}{\cos^2x})\]\[1\sin^2x \times \frac{1}{\cos^2x}\]\[(1\sin^2x)(\sec^2x).\]
 2 years ago

mica Group TitleBest ResponseYou've already chosen the best response.0
aaaaaaaaaa lol gotcha xD thank you
 2 years ago

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
yw :)
 2 years ago

myininaya Group TitleBest 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.
 2 years ago

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
? > ??
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.1
Hint 1: Combine the fractions
 2 years ago

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

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
dw:1352617552352:dw
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.1
Yes but that totally is not the same as (1sin^2(x))(sec^2(x))
 2 years ago

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
well, i can be wrong here because i'm only studying in middle school
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.1
Recall the distributive property a(b+c)=ab+ac
 2 years ago

myininaya Group TitleBest 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))
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.1
@mica you leave already?
 2 years ago

myininaya Group TitleBest 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.
 2 years ago

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
He isn't worrying about his question :)
 2 years ago

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
Okay mam sorry. Thanx for the advice :)
 2 years ago

myininaya Group TitleBest 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.
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.1
We don't want Scenario 1. We want people to actually learn.
 2 years ago

jiteshmeghwal9 Group TitleBest ResponseYou've already chosen the best response.1
okay mam :)
 2 years ago

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