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Trig
Questions (20)
Lisa, Beth, and Tim painted their grandparent's house.
• The amount of time Lisa painted can be represented by x. • The
2 answers
615 views
Explain the law of conservation of energy. Give a specific example using kinetic and potential energy that shows how energy is
1 answer
480 views
How Do I find the domain when a function is increasing
1 answer
531 views
In the figure shown, l1∥l2. If m∠8=49°, determine the measures of the other seven angles in the figure.
2 answers
1,941 views
Nasreen is designing an obstacle course that includes two ladders leaning against a pole. In order for the ladders to fit in the
2 answers
1,270 views
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
2 answers
709 views
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
3 answers
924 views
Find all solutions in the interval [0,2pi].
sin 2x + sin x = 0
2 answers
1,461 views
Find all real numbers in the interval [0,2pi) that satisfy the equation.
cos^2 x+2 cos x+1 = 0
2 answers
1,154 views
Multiply and Simplify.
( 1 + cot θ )^2
1 answer
460 views
Find the magnitude and direction angle for the given vector.
12√(2), -12√(2)
2 answers
449 views
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))
1 answer
479 views
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 answers
856 views
How come cosine of 225 degrees is a positive number i thought it was negative because it's reference angle would be 45 degrees
6 answers
700 views
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
4 answers
721 views
Two observers 1 km apart spot an airplane. The angles of elevation of the airplane from the two observers are 22 degrees 50
2 answers
1,317 views
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
g
2 answers
817 views
Find all of the solutions between 0 and 2pi:
2sin(x)^2 = 2 + cos(x)
1 answer
941 views
Prove that (3cos^2x + 8sinx-8/cos^2x) = (3sinx-5/sinx+1)
3 answers
643 views
Prove that (cosy/1+siny) + (1+siny/cosy) = 2secy
1 answer
1,474 views
Answers (33)
Use an addition or subtraction formula to simplify the expression: tan(π/2−u)=cot(f(u)).
It is B
XDDDDDDD the answer is A
Oh this isn't trigonometry my first name is very long so my nickname is trig
thx bobby
Fnaf is somewhat correct the right answers are actually A B B,D A,D Hope this helps!
CDB is correct
C B D A Enjoy sub to me on YT name Byte
The Correct Answers are C A, D C A
Kill Joy is wrong the answers are 1. C 2. B 3. D 4. A
Just took the test CCCBC is correct stop lying guys
The real answers as of 2019 are C D A A B
Snow is correct as of 2019 OCT
Ruby is 100% right
Thanks, i got roughly the same answer, 282.
Thanks so much!
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
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
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.
It does, doesn't it?
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
x + 3 + 4x = 23 5x + 3 = 23 5x = 20 x = 4
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
wooden ( I went to Google, searched for "anagram", clicked on the first link, pasted "oedown" into the box, and clicked "Get anagrams" )
Sorry, I read that wrong. Plural Possessive = More than 1 that own something (Add an s and add an apostrophe after it) elephant trunks'
Plural Positive = More than 1 (there's an 's' at the end) elephant trunks
(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,
(Pressure doesn't matter here either, since it remains constant. So you're left with V/T=V/T, which is Charles' Law.)
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] )
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
( 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 )
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
(3cos^2x + 8sinx-8)/cos^2x = (3sinx-5)/sinx+1
