Trig
Most popular questions and responses by Trig
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 
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 
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 
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 
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 
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 4.3m
asked on November 14, 2017 
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 
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 
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 
Trig.
sec^2xcotxcotx=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 
Trigonometry
Prove that (cosy/1+siny) + (1+siny/cosy) = 2secy
asked on November 9, 2008 
trig
Solve tan2A  2tanA = 1 for 0º≤A≤360º.
asked on November 12, 2012 
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 
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 
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 
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 
Anonymous
Give the exact intersection point for the equations f(x)=4sin^2x+7sinx+6 and g(x)=2cos^2x4sinx+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 
lena
sinxcosx = 0 x=? please and thank you! i'd appreciate it!
asked on November 30, 2008 
trig
simplify the expression. (sin^2x+cos^2x)  (csc^2xcot^2x)
asked on July 14, 2013 
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 
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 
Trigonometry
Prove that (3cos^2x + 8sinx8/cos^2x) = (3sinx5/sinx+1)
asked on November 9, 2008 
trig
simplify the expression. cot^2(x)csc^2(x)
asked on July 14, 2013 
Trig
Multiply and Simplify. ( 1 + cot θ )^2
asked on July 4, 2013 
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(xd))+60 so How do I get the phase shift? d?
asked on May 7, 2009 
Trig
Find all of the solutions between 0 and 2pi: 2sin(x)^2 = 2 + cos(x)
asked on November 13, 2008 
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 
trig
Find all solutions in the interval [0,2pi]. sin 2x + sin x = 0
asked on July 4, 2013 
Jolly
Find the magnitude and direction angle for the given vector. 12√(2), 12√(2)
asked on June 30, 2013

Maths
Thanks, i got roughly the same answer, 282.
posted on November 18, 2016 
math
Thanks so much!
posted on February 18, 2014 
trig
I figured out that tan(theta)=1 is 3pi/4+n(pi)
posted on March 22, 2012 
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 
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 
Anonymous
I mean, so would d = 1747.25 ie y=50sin(2pi/11(x1747.25))+60
posted on May 7, 2009 
Anonymous
How did you get 1750d=11/4?
posted on May 7, 2009 
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 
English
It does, doesn't it?
posted on November 13, 2008 
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+159 When you do all of that to the number, you get 48 THE FINAL
posted on November 13, 2008 
math
x + 3 + 4x = 23 5x + 3 = 23 5x = 20 x = 4
posted on November 13, 2008 
Math
THE SIDES ON A 306090 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 
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 
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 
3rd grade
Plural Positive = More than 1 (there's an 's' at the end) elephant trunks
posted on November 13, 2008 
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 
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 
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 
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 
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 
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 
Trigonometry
(3cos^2x + 8sinx8)/cos^2x = (3sinx5)/sinx+1
posted on November 9, 2008