abdo

Popular questions and responses by abdo
  1. Trig........

    I need to prove that the following is true. Thanks (cosx / 1-sinx ) = ( 1+sinx / cosx ) I recall this question causing all kinds of problems when I was still teaching. it requires a little "trick" L.S. =cosx/(1-sinx) multiply top and bottom by 1+sinx,

    asked on April 18, 2007
  2. Trig.......

    I need to prove that the following is true. Thanks (2tanx /1-tan^x)+(1/2cos^2x-1)= (cosx+sinx)/(cosx - sinx) and thanks ........... check your typing. I tried 30ยบ, the two sides are not equal, they differ by 1 oh , thank you Mr Reiny I'll tell my teacher

    asked on April 18, 2007
  3. Economics

    36. Consider a depressed economy that, even after significant monetary stimulus efforts that pushed short-term interest rates to close to zero, still experiences a recessionary gap of 1,200 billion dollars and 10 % unemployment rate. Economist estimate

    asked on December 17, 2019
  4. physics

    a car is traveling with a speed of 15 m/s on a stratight horzontal highway. the wheels of the car have a radius of 50cm.if the car then speeds up with an acceleration of 2 m/s for 5s, find the number of revolution of the wheels during this period.

    asked on June 28, 2011
  5. Trigonometric

    sin3x=(sinx)(3-asin^2x) Wow! is that arcsin^2(x) ??? are we solving for x? or is it proving the identity? proving the identity sin3x=(sinx)(3-sin^2x) Your identity is wrong, it should say: sin3x=(sinx)(3-4sin^2x) try this: sin(3x) = sin(2x + x) = sin2xcosx

    asked on May 3, 2007
  6. learning

    How is the learning system in British?? http://en.wikipedia.org/wiki/Education_in_the_United_Kingdom =)

    asked on April 28, 2007
  7. Trigonometic

    Solving Trigonometic Equations solve for x : ( by radian) 1)cotx= 3 2)secx = 0.5 1) Same as tan x = 1/3. Use a calculator. I get 0.321 radians 2) sec x = 0.5 is not possible. The absolute value of the secant must be one or more. >

    asked on April 23, 2007
  8. Trigonometic

    Solving Trigonometic Equations solve for x and give the answers as a equations : ( by radian) 1)cos(sinx)=1 We know sin 2x = 2(sinx)(cosx) so (sinx)(cos)=1/2(sin 2x) So we can change your equation from (sinx)(cosx)=1 to 1/2(sin 2x) = 1 (sin 2x) = 2 But the

    asked on April 26, 2007
  9. Trigonometic

    Solving Trigonometic Equations 1)sinx = (4/5) 2) cosx = (-12/13) Solving Trigonometic Equations 1)sinx = (4/5) 2) cosx = (-12/13) What is the question? Solve for x? x= arcsin (4/5) put that in your calculator. Same for the next. For both cases I recognize

    asked on April 23, 2007
  10. Algebra

    what is the value of (n) ? (n+3)! = 5040 the prime factorization of 5040 = 2x2x2x2x3x3x5x7 since the ! function involves the multiplication of consecutive integers, it makes sense to arrange these factors so they form consecutive numbers. I got 2,3,4,5,6,

    asked on May 8, 2007
  11. Trigonometic

    Solving Trigonometic Equations solve for x : 1)sinx = (4/5) 2) cosx = (-12/13) I will do the second one. first of all since the cosine is negative the angle must be in either the second or third quadrants. To find the "angle in standard position" take

    asked on April 23, 2007
  1. algebra

    entomology a tropical species of mite named archegozetes longisetosus is the record holder for the strongest insect in the world.it can lift up to 1.182*10^3 times its own weigt.

    posted on October 13, 2019
  2. statistics

    x=15 month

    posted on October 10, 2019
  3. math

    please what is the answer

    posted on June 15, 2016