Trig

This page lists questions and answers that were posted by visitors named Trig.

Questions

The following questions were asked by visitors named Trig.

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

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

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

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...

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 ai...

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?...

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 an...

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 c...

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))

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

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

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

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

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?

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?

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 l...

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

How Do I find the domain when a function is increasing

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

Answers

The following answers were posted by visitors named Trig.

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

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...

( 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 )

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

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] )

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

(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...

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

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

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

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

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

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 EQUATI...

It does, doesn't it?

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.

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

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

Thanks so much!

Thanks, i got roughly the same answer, 282.

Ruby is 100% right

Snow is correct as of 2019 OCT

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

Just took the test CCCBC is correct stop lying guys

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

The Correct Answers are C A, D C A

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

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

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

XDDDDDDD the answer is A

Use an addition or subtraction formula to simplify the expression: tan(π/2−u)=cot(f(u)).