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  1. sec(x) - sin(x) = [tan^2(x) + cos^2(x)] / [sec(x) + sin(x)] LS: sec(x) - sin(x) = [sec(x) - sin...x) = 1 dividing through by cos^2(x) tan^2(x) + 1 = sec^2(x) tan^2(x) = sec^2(x) - 1 resubstituting tan^2(x): =sec...

    2 Answers · Science & Mathematics · 30/11/2009

  2. x * tan(x) * dx / (sec(x) + tan(x)) => x * tan(x) * (sec(x) - tan(x)) * dx / (sec(x)^2 - tan(x)^2) => x * (tan(x) * sec(x) - tan(x)^2) * dx / 1 => x * (sec(x) * tan(x) - sec(x)^2 + 1) * dx u = x du = dx dv = sec(x) * tan(x) * dx - sec(x...

    3 Answers · Science & Mathematics · 29/04/2013

  3. sec[(5/2)x] tan[(5/2)x] dx = (I assume x is in the numerator) let [(5/2)x] = u → x = (2/5)u → dx = (2/5) du then, substituting, you get: ∫ sec(5/2x) tan(5/2x) dx = ∫ sec u tan u (2/5) du = take out the constant: (2/5) ∫ sec...

    3 Answers · Science & Mathematics · 14/08/2008

  4. y*sec(x) = x*tan(y) Differentiating both sides with respect to x, y * d/dy(sec(x)) + sec(x) * dy/dy = x * d/dy(tany) + tan(y) * dx/dy Or y * d/dy(sec(x...

    2 Answers · Science & Mathematics · 18/07/2009

  5. 1+sec(x)=tan(x) 1+sec(x)=sin(x)/cos(x) Crossing multiplication. cos(x)(1+sec(x))=sin(x) (cos(x)+1)^2=(sin(x))^2 cos^2(x)+2cos(x)+1=sin^2(x) ..... ... ...

    11 Answers · Science & Mathematics · 02/08/2013

  6. Triple sec is an orange flavored liqueur that is used in ...and it will be noted on the bottle. The two most popular high end triple secs in the states are Grand Marnier (it's ...

    8 Answers · Food & Drink · 28/12/2007

  7. You SEC-haters are hilarious. Talking about most national titles...news services for poll championships? That would be the SEC with 19, which is six more than any other conference. Which would also be...

    15 Answers · Sports · 14/01/2011

  8. First, a few identities: [a] sec x = 1 / cos x [b] csc x = 1 / sin x [c] cos x + n360 = cos x...90. 5) Apply [i], [j] or [k] if possible. So... sec -150 = 1/cos -150 [a] = 1/cos 150 [e] = -(1/cos 30) [g] = -(1...

    1 Answers · Science & Mathematics · 03/12/2007

  9. sec(√x) / √x dx let √x =t (1(/2√x))*dx=dt substitute ∫ sec(√x) / √x dx=∫ 2sect dt =2ln|sect+tant|+C t=√x hence ∫ sec(√x) / √x dx...

    2 Answers · Science & Mathematics · 22/06/2013

  10. sec^2(18) - tan^2(18) First off, remember that there is an identity that relates sec^2(x) with tan^2(x); it goes sec^2(x) = tan^2(x) + 1. Therefore...

    6 Answers · Science & Mathematics · 13/03/2007

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