# Trig

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

2. ## trig

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

3. ## Trigonometry

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

4. ## Pre Algebra

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

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

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

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

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?

9. ## trig

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

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

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

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.)

13. ## trigonometry

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

14. ## Science

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

15. ## algebra

How Do I find the domain when a function is increasing

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.

17. ## trigonometry

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

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?

19. ## trig

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

20. ## trig

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

21. ## trig

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

22. ## trig

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

23. ## Trig

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

24. ## Jolly

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

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))

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

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

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

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

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

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

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

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

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?

35. ## lena

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

36. ## Trig

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

37. ## Trigonometry

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

1. ## SCIENCE

It is B

posted on March 20, 2020
2. ## social studies

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

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

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

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