Popular questions and responses by Trig
  1. Trig

    As you ride a ferris wheel, your distance from the ground varies sinusoidally with time. When the last passenger boards the ferris wheel and the ride starts moving, let your position be modeled by the diagram provided. Let t be the number of seconds that

    asked on March 22, 2012
  2. trig

    rewrite each equation in polar form. solve for r if possible a. 2x+3y=5 b. y=1/2x

    asked on November 25, 2014
  3. Trigonometry

    Prove that (cosy/1+siny) + (1+siny/cosy) = 2secy

    asked on November 9, 2008
  4. Pre Algebra

    In the figure shown, l1∥l2. If m∠8=49°, determine the measures of the other seven angles in the figure.

    asked on October 2, 2019
  5. math

    kamala had 5026 grams of flour in a canister. she bought a 4157 gram bag of flour. she poured some flour from the bag to the canister. as a result, the mass of the flour in the canister is now twice the mass of the flour left in the bag. how much flour is

    asked on October 31, 2014
  6. Math

    Lisa, Beth, and Tim painted their grandparent's house. • The amount of time Lisa painted can be represented by x. • The amount of time Beth painted is 1 3/5 times the amount Lisa painted • The amount of time Tim painted is 1 2/3 times the amount Lisa

    asked on February 21, 2020
  7. Math

    Nasreen is designing an obstacle course that includes two ladders leaning against a pole. In order for the ladders to fit in the obstacle course, one ladder must span 1.6 m horizontally and the other must span 5 m horizontally. She already has one 4.3-m

    asked on November 14, 2017
  8. Maths

    A yacht sets sail from a harbour and sails on a bearing of 065T for 3.4km. it then turns and sails on a bearing of 127T for another 5km. On what bearing (to the nearest minute) should the yacht sail if it was to travel directly back to the harbour?

    asked on November 18, 2016
  9. trig

    Solve tan2A - 2tanA = -1 for 0º≤A≤360º.

    asked on November 12, 2012
  10. Trig

    Two observers 1 km apart spot an airplane. The angles of elevation of the airplane from the two observers are 22 degrees 50 minutes and 24 degrees 40 minutes. If the observers and the airplane are in the some vertical plnae, compute the altitude of the

    asked on September 10, 2009
  11. Anonymous

    Give the exact intersection point for the equations f(x)=4sin^2x+7sinx+6 and g(x)=2cos^2x-4sinx+11 Ok, my result is that there is no intersection point because if you put f(x)=g(x) and try to solve for x or the intersection point, the LS f(x) is not

    asked on May 8, 2009
  12. trigonometry

    A triangular plot of land has sides of lengths 410 feet, 360 feet, and 170 feet. Approximate the smallest angle (in degrees) between the sides. (Round your answer to the nearest whole number.)

    asked on March 26, 2020
  13. trigonometry

    Find a for ΔABC where β = 67.083°, b = 0.775, c = 0.188. Round your answer to three decimal places.

    asked on March 26, 2020
  14. Science

    Explain the law of conservation of energy. Give a specific example using kinetic and potential energy that shows how energy is conserved.

    asked on December 20, 2019
  15. algebra

    How Do I find the domain when a function is increasing

    asked on December 6, 2019
  16. trigonometry

    Consider the following. θ = 30°, d = 20 m (a) Find the length of the arc that subtends the given central angle θ on a circle of diameter d. (b) Find the area A of the sector determined by θ.

    asked on November 11, 2019
  17. trigonometry

    cos θ = 0.7677 (a) the nearest 0.01° (b) the nearest 1'

    asked on November 10, 2019
  18. math

    After leaving a runway a planes angle of ascent is 15 degrees and its speed is 265 feet per second. How many minutes will it take for the airplane to climb to a height of 11,000 feet?

    asked on February 18, 2014
  19. trig

    simplify the expression. (sin^2x+cos^2x) - (csc^2x-cot^2x)

    asked on July 14, 2013
  20. trig

    simplify the expression. cot^2(x)-csc^2(-x)

    asked on July 14, 2013
  21. trig

    Find all solutions in the interval [0,2pi]. sin 2x + sin x = 0

    asked on July 4, 2013
  22. trig

    Find all real numbers in the interval [0,2pi) that satisfy the equation. cos^2 x+2 cos x+1 = 0

    asked on July 4, 2013
  23. Trig

    Multiply and Simplify. ( 1 + cot θ )^2

    asked on July 4, 2013
  24. Jolly

    Find the magnitude and direction angle for the given vector. 12√(2), -12√(2)

    asked on June 30, 2013
  25. Math

    How do you do this..i have the answer i just need a step by step way to solve this.. sec(sin^-1 (2/5))

    asked on November 14, 2011
  26. Trig.

    sec^2xcotx-cotx=tanx (1/cos)^2 times (1/tan)-(1/tan)=tan (1/cos^2) times (-2/tan)=tan (-2/cos^2tan)times tan=tan(tan) sq. root of (-2/cos^2)= sq. root of (tan^2) sq. root of (2i)/cos=tan I'm not sure if I did this right. If I didn't, can you show me the

    asked on January 9, 2010
  27. Trig

    How come cosine of 225 degrees is a positive number i thought it was negative because it's reference angle would be 45 degrees below the second quadrant and in a unit circle cosine is just the x value so I thought cosine of something in both the second and

    asked on November 3, 2009
  28. TRIG

    please help two questions h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 2 9 6 7 1 5 7 also A surveillance satellite circles Earht at a height of h miles above the surface. Suppose that d is the distance, in miles, on the

    asked on September 14, 2009
  29. Trig

    I have no idea how to do this problem From an airplane flying 2 kilometers aboce the ocean, a piolet sees two ships directly to the east. The angles of depression to the ships are 8 degrees 20 minutes and 75 degrees 40 minutes how far away are the ships? I

    asked on September 11, 2009
  30. trig

    h t t p : / / i m g 4 0 . i m a g e s h a c k . u s / c o n t e n t . p h p ? p a g e = d o n e& l = i m g 4 0 / 1 4 8 / a s d a s d y e . j p g & v i a = m u p l o a d (def of tan theta = a^-1 o)a = o opposite = adjacent tan theta written with respect to

    asked on September 6, 2009
  31. Trig

    h t t p : / / m a t h c e n t r a l . u r e g i n a . c a / Q Q / d a t a b a s e / Q Q . 0 9 . 9 9 / a n g e l a 2 . 2 . g i f give that picture how do I solve for (h) I know that you you From the diagram tan(3.5) = h/(13 + x) and tan(9) = h/x. Solve the

    asked on August 27, 2009
  32. trig

    ok I'm trying to solve for an angle knowing adjacent and opposite of a triangle so I do tangent by definition tan theta = a^-1 o how do I algebraically solve for theta

    asked on July 30, 2009
  33. Ske

    If Shella has a pulse rate of 73 beats per minute and a blood pressure of 121 over 85 and this can be modeled by a sinusoidal function, find this equation. Could you explain to me how to do this step please by showing me the steps? Thanks

    asked on May 7, 2009
  34. Anonymous

    study of sunspots. spots in a year min. is 10, max is 110. between max's of 1750 & 1948, 18 cycles occurred. Find a sinusoidal equation to model this. My equation looks something like this so far: y=50sin(2pi/11(x-d))+60 so How do I get the phase shift? d?

    asked on May 7, 2009
  35. lena

    -sinx-cosx = 0 x=? please and thank you! i'd appreciate it!

    asked on November 30, 2008
  36. Trig

    Find all of the solutions between 0 and 2pi: 2sin(x)^2 = 2 + cos(x)

    asked on November 13, 2008
  37. Trigonometry

    Prove that (3cos^2x + 8sinx-8/cos^2x) = (3sinx-5/sinx+1)

    asked on November 9, 2008

    It is B

    posted on March 20, 2020
  2. social studies

    XDDDDDDD the answer is A

    posted on February 25, 2020
  3. Math

    Oh this isn't trigonometry my first name is very long so my nickname is trig

    posted on February 21, 2020
  4. Social Studies

    thx bobby

    posted on January 17, 2020
  5. history

    Fnaf is somewhat correct the right answers are actually A B B,D A,D Hope this helps!

    posted on December 4, 2019
  6. L.A.Help!!!!!!

    CDB is correct

    posted on November 11, 2019
  7. Social Studies

    C B D A Enjoy sub to me on YT name Byte

    posted on November 8, 2019
  8. social studies

    The Correct Answers are C A, D C A

    posted on October 29, 2019
  9. Social Studies Check my answers!

    Kill Joy is wrong the answers are 1. C 2. B 3. D 4. A

    posted on October 29, 2019
  10. Language Art's

    Just took the test CCCBC is correct stop lying guys

    posted on October 29, 2019
  11. Language Arts

    The real answers as of 2019 are C D A A B

    posted on October 17, 2019
  12. English

    Snow is correct as of 2019 OCT

    posted on October 17, 2019
  13. Ed. tech HELP!!!

    Ruby is 100% right

    posted on October 4, 2019
  14. Maths

    Thanks, i got roughly the same answer, 282.

    posted on November 18, 2016
  15. math

    Thanks so much!

    posted on February 18, 2014
  16. trig

    I figured out that tan(theta)=-1 is 3pi/4+n(pi)

    posted on March 22, 2012
  17. Trig

    why wouldn't you use the 30 degree angle? I did 360 -90 to get 270 degrees and then did 300 - 270 to get 30 degrees and used that angle why would I use the 60 degree angle instead of the thirty

    posted on November 3, 2009
  18. Trig

    I think i was in radians my bad um how come tan of 300 is negative root three tangent in unit circle is y/x I am getting .5/(root three/2) which is not root three

    posted on November 3, 2009
  19. Anonymous

    I mean, so would d = 1747.25 ie y=50sin(2pi/11(x-1747.25))+60

    posted on May 7, 2009
  20. Anonymous

    How did you get 1750-d=11/4?

    posted on May 7, 2009
  21. SUMS?

    1+3=4 1+3+5=9 1+3+5+7=16 1+3+5+7+9=25 You just square how many consecutive odd numbers you're adding together. So it's n^2.

    posted on November 13, 2008
  22. English

    It does, doesn't it?

    posted on November 13, 2008
  23. MATH

    Let x be the number. You multiply that number by 7 SO FAR WE HAVE: 7x You add 15 to that number SO FAR WE HAVE: 7x+15 You subtract 3^2 (which is 9) from that number SO FAR WE HAVE: 7x+15-9 When you do all of that to the number, you get 48 THE FINAL

    posted on November 13, 2008
  24. math

    x + 3 + 4x = 23 5x + 3 = 23 5x = 20 x = 4

    posted on November 13, 2008
  25. Math

    THE SIDES ON A 30-60-90 TRIANGLE: Short Side = x Long Side = sqrt(3)*x Hypotenuse = 2x In this case: Short Side = 7.5 Long Side = sqrt(3)*7.5 Hypotenuse = 2*7.5

    posted on November 13, 2008
  26. 2nd grade

    wooden ( I went to Google, searched for "anagram", clicked on the first link, pasted "oedown" into the box, and clicked "Get anagrams" )

    posted on November 13, 2008
  27. 3rd grade

    Sorry, I read that wrong. Plural Possessive = More than 1 that own something (Add an s and add an apostrophe after it) elephant trunks'

    posted on November 13, 2008
  28. 3rd grade

    Plural Positive = More than 1 (there's an 's' at the end) elephant trunks

    posted on November 13, 2008
  29. math

    (x,y) MOVE LEFT : Subtract however many units left you go from x MOVE RIGHT: Add however many units right you go to x MOVE UP: Add however many units up you go to y MOVE DOWN: Subtract however many units down you go from y ^ Do that for all 3 vertices ( D,

    posted on November 13, 2008
  30. chem

    (Pressure doesn't matter here either, since it remains constant. So you're left with V/T=V/T, which is Charles' Law.)

    posted on November 9, 2008
  31. chem

    PV/nT = PV/nT UNITS: ------ P: atm (convert kPa to atm) V: L (convert cm^3 to L) n: mol (moles don't matter in this problem) T: K (convert C to K) ( They need to fit with the ideal gas constant [R]'s units: [L*atm/K*mol] )

    posted on November 9, 2008
  32. AP Chem

    Temperature must always be in Kelvin! Add 273 to the temperature in Celsius to get the temperature in Kelvin. In this case: INITIAL TEMPERATURE = 22+273 = 295 K FINAL TEMPERATURE = -197+273 = 76 K

    posted on November 9, 2008
  33. AP Chem

    ( You only use PV=nRT when none of the variables change. In this case the temperature is changing, so you use PV/nT = PV/nT )

    posted on November 9, 2008
  34. AP Chem

    Always start with PV/nT = PV/nT, where P is the pressure, V is the volume, n is the number of moles, and T is the temperature. Take out whichever terms you don't need. In this case, you don't need n (the number of moles), so you're left with: PV/T = PV/T

    posted on November 9, 2008
  35. Trigonometry

    (3cos^2x + 8sinx-8)/cos^2x = (3sinx-5)/sinx+1

    posted on November 9, 2008