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Verifying Identites  TOPIC_SOLVED

Hey guys so I got a couple problems that I am stuck on and hoping to get some help 1.)( cot^2(x)-1)/(1+cot^x(x))=1-2sin^2(x) SOLVED 2.) sin^4(x)-cos^4(x)=2sin^2(x)-1 SOLVED 3.)tan^2(x)sin^2(x)=tan^2(x)+cos^2(x)-1 WORKING ON SEE BOTTOM POST 1 4.) ((sec(x)-tan(x))^2)/(sec(x)csc(x)-tan(x)csc(x))=2tan(x...
by Chyabrah
on Sat Feb 18, 2012 5:07 am
 
Forum: Trigonometry
Topic: Verifying Identites
Replies: 4
Views: 2897

Re: Verifying Identites  TOPIC_SOLVED

Hey so I was able to solve the first 2 now working on number 3. I will do these one by one to clear confusion. tan^2(x)sin^2(x)=tan^2(x)+cos^2(x)-1 3.) I started to work with the right hand side since it had an addition sign and looked ugly. First, I converted (cos^2(x)-1) to -sin^2(x) so i had now ...
by Chyabrah
on Sat Feb 18, 2012 6:20 pm
 
Forum: Trigonometry
Topic: Verifying Identites
Replies: 4
Views: 2897

Re: Verifying Identites  TOPIC_SOLVED

((sec(x)-tan(x))^2+1)/(sec(x)csc(x)-tan(x)csc(x))=2tan(x) This guy seems to be giving me a headache! I started by simplifying the denominator. (sec(x)csc(x)-tan(x)csc(x)) is equal to 1/(sin(x)cos(x))-sin(x)/(cos(x)/sin(x)) both have the same denominator so i simplified it to 1-sin(x) ---------------...
by Chyabrah
on Sat Feb 18, 2012 9:08 pm
 
Forum: Trigonometry
Topic: Verifying Identites
Replies: 4
Views: 2897

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