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October 21, 2014

Homework Help: Math: Trigonometry

Recent Homework Questions About Trigonometry

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Trig
A carousel with a 50-foot diameter makes 4 revolutions per minute. a) Find the angular speed of the carousel in radians per minute. b) Find the linear speed in feet per minute of the platform rim of the carousel.
Sunday, April 1, 2012 at 6:19pm

Trig.
Josh kicks a soccer ball with an initial velocity of 18 feet per second out of a window from a height of 12 feet. The function h(t)= -16t^2+18t+12 represents the height of the soccer ball after t seconds.What is the domain of this function in the context of this problem?
Sunday, April 1, 2012 at 2:17pm

Trig
Why does 11.4(7pi/18)=133pi/30 ?
Sunday, April 1, 2012 at 12:12pm

Trig
Solve the equation 2sin(2x) = cos x. and Solve the equation cos^2(2x)–sin^2(2x)= (√3 / 2).
Sunday, April 1, 2012 at 1:13am

Trig
Use the half-angle formulas to come up with an exact expression for each function value below. You do not have to simplify your answers. cos(pi/16)
Sunday, April 1, 2012 at 1:09am

Trig Circular Motion
A es004-1.jpginch circular saw blade rotates at 5200 revolutions per minute. a) Find the angular speed of the saw blade in radians per minute. b) Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact the wood being cut.
Saturday, March 31, 2012 at 4:45pm

Trig
A ferris wheel at the fair has a radius of 60 feet. If it takes 24 seconds to make a full revolution, what is the linear speed for the passengers?
Saturday, March 31, 2012 at 4:44pm

trig
2sin^2x-1=0[0,2pi)
Thursday, March 29, 2012 at 10:59am

Geom./Trig.
an airplane flies directly overhead at 540mph. 1 minute later is seen at an angle of elevation of 34 degrees. how far did the airplane fly during that time? what is the elevation of the plane?
Wednesday, March 28, 2012 at 5:20pm

TRIG
IF Y=5+7C0S 4(0-7). FIND YWHEN 0=42 DEGREES. SMALLEST POSITIVE VALUE OF 0 FOR WHICH Y=1.5
Wednesday, March 28, 2012 at 11:58am

trig
Two tracking stations are on the equator 134 miles apart. A weather balloon is located on a bearing of N 38°E from the western station and on a bearing of N 19°E from the eastern station. How far is the balloon from the western station? Round to the nearest mile.
Wednesday, March 28, 2012 at 11:26am

trig
Find the other endpoint of the line segment with the given endpoint and mid point. 1. Endpoint:(-1, 9), midpoint: (-9, -10) 2. Endpoint: (2, 5), midpoint: (5, 1) 3. Endpoint:(9, -10), midpoint: (4, 8)
Wednesday, March 28, 2012 at 9:49am

trig
prove: cot^2(x)=cos(x)/(sinx)(tanx)
Monday, March 26, 2012 at 9:26pm

algebra-trig help asap
An isosceles triangle has a base 22 cm long and a base angle of 72 degrees. Find its perimeter.
Monday, March 26, 2012 at 7:50pm

trig
prove: (tan x + sec x)^2 = 2sec^2 x + 2tan x sec x - 1
Monday, March 26, 2012 at 11:20am

trig
prove: (tan x + sec x)^2 = 2sec^2 x + 2tan x sec x - 1
Monday, March 26, 2012 at 11:10am

trig
How do I prove : 4sinAcosAcos2Asin15 all over. :sin2A(tan225-2sinsquared A)is equal to. :root 6 - root 2 over 2
Monday, March 26, 2012 at 7:44am

trig
Prove: sin(x–y)sin(x+y)=sin^2(x)–sin^​2(y)
Monday, March 26, 2012 at 1:09am

calculus
need help simplifying some trig identities such as: (csc t) (sin t) cos t = 0.75 and tan t = 0.88, find sec t and cot t; (cot2t) (sin2t) + sin2 t; csc2t - cot2t/sin2t
Sunday, March 25, 2012 at 9:15pm

trig
Prove: (tan x+sec x)^2 = 2sec^2(x)+2tan(x)secx-1
Saturday, March 24, 2012 at 5:10pm

trig
Prove (cscx+cotx)(cscx-cotx)=1
Saturday, March 24, 2012 at 4:10pm

Trig
Prove: (cotx sinx)(secx-cosx)=sin^2(X)
Saturday, March 24, 2012 at 3:03pm

trig
What is cosx=1/2?
Thursday, March 22, 2012 at 3:43pm

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 have elapsed since ...
Thursday, March 22, 2012 at 12:43pm

trig
Solve for theta, giving a general formula for all of the solution: tan(theta)=-1 sin(theta/2)=1/2
Thursday, March 22, 2012 at 12:28pm

Trig
4sin^(2)x-3=0
Wednesday, March 21, 2012 at 9:08pm

Trig
cos(3x)=-1
Wednesday, March 21, 2012 at 9:02pm

Trig
Solve Sinx=Cos2x-1 for all values between 0 and 2pi
Wednesday, March 21, 2012 at 4:34pm

trig
Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help
Wednesday, March 21, 2012 at 12:57am

trig
Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help
Wednesday, March 21, 2012 at 12:57am

trig
If theta is a standard position angle and cot theta = 1.85, in which quadrant(s) could theta lie?
Tuesday, March 20, 2012 at 3:50pm

trig
if tan(θ)=√(33) / 4 (√ does not ride over 4) find sin(θ)<0 i would just like to know the steps of how to do it.
Tuesday, March 20, 2012 at 3:33pm

trig
What would be the force required to push a 100-pound object along a ramp that is inclined 10 degrees with the horizontal?
Monday, March 19, 2012 at 7:08pm

trig
if sin theta equals 3/7, what is tan theta?
Monday, March 19, 2012 at 4:12pm

trig
howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the height of the balloon. A.if its situated between howard and keight B.If it is ...
Monday, March 19, 2012 at 7:03am

trig
verify that 2/1+cos theta - tan squared (theta/2) = 1
Monday, March 19, 2012 at 12:09am

trig e-maths
giving that cosx=4/5 and siny=12/13, find cos(x+y) when x is acute and y is obtuse angle
Sunday, March 18, 2012 at 9:58am

trig
a plane takes off at 10.00am from an airfield, and flies at 120km/h on a bearing of N35W. A second plane takes off at 10.05am from the same airfield, and flies on a bearing of S80E at a speed of 90km/h. How far apart are the planes at 10.25am?
Sunday, March 18, 2012 at 7:29am

trig
Find the general solution for x if cos2x + sin3x = sinx
Sunday, March 18, 2012 at 5:22am

inverse trig HELP PLEASE!!
Write the general solution to y = arcsin (0.6428). 40°±360°k 140°±360°k 220°±360°k 320°±360°k How do I find the right answer? I am like seriously stuck. I need help please.
Sunday, March 18, 2012 at 12:12am

trig
In a computer simulation, a satellite orbits around Earth at a distance from the Earth's surface of 2.1 X 104 miles. The orbit is circular, and one revolution around Earth takes 10.5 days. Assuming the radius of the Earth is 3960 miles, find the linear speed (velocity) of ...
Saturday, March 17, 2012 at 10:59pm

trig
solve for theta 6. tan theta=-1 7. sin(theta/2)=1/2 thank you for your help!
Saturday, March 17, 2012 at 6:00pm

trig
when sin theta+cos theta=square root of 2,find the solution of sin^3 theta+cos^3 theta
Saturday, March 17, 2012 at 3:51pm

Algebra-Trig help asap
A rhombus has sides of 5 cm each and one diagonal is 6 cm long. Find the area of the rhombus.
Tuesday, March 13, 2012 at 5:37pm

Math:Trig.!!!!
You (safely) bungee jump from a 200-feet tall bridge in your town. Your distance above the water's surface depends on the time since you jumped. Sketch a reasonable graph.
Monday, March 12, 2012 at 10:02pm

trig
solve the equation 2 tan C-3=3 tan X-4 algebraically for all values of C in the interval odegrees lessthan or equal C lessthan360 degrees.
Monday, March 12, 2012 at 9:20pm

Trig-Algebra help asap
A regular octagon is inscribed in a circle with a radius of 5 cm. Find the area of the octagon.
Monday, March 12, 2012 at 8:50pm

Trig-Algebra help asap
A regular pentagon is inscribed in a circle whose radius measures 7 cm. Find the area of the pentagon.
Monday, March 12, 2012 at 8:49pm

Trig-Algebra help asap
A rhombus has sides of 5 cm and one diagonal is 6 cm long. Find the area of the rhombus.
Monday, March 12, 2012 at 8:17pm

Trig-Algebra help asap
The adjacent sides of a parallelogram measure 8 cm and 12 cm and one angle measures 60 degrees. Find the area of the parellelogram.
Monday, March 12, 2012 at 7:50pm

trig
SOlve over (2,pie) and find the general solution in radians. 2sin3x = square root of 2
Monday, March 12, 2012 at 7:32pm

trig
5sin(2x)+4cos(x)=0
Monday, March 12, 2012 at 6:04pm

trig
5sin(2x)+4cos(x)+0
Monday, March 12, 2012 at 6:03pm

trig
cos x/1+sin x + 1+sin x/ cos x= 2sec x
Monday, March 12, 2012 at 5:09pm

trig
verify the identity algebraically- (5-5 cos x)(5+5 cos x)=25 (sin^x)
Monday, March 12, 2012 at 5:07pm

Trig Help
Prove the following: [1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx] =[1+sinx]/[(sinx+1)/sinx] =[1+sinx]*[sinx/(sinx+1)] =[sinx+sin^2x]/[sinx+1] =[sinx+(1-cos^2x)]/[sinx+1] =??? This is where I'm stuck. Can someone help me. Please check what I got is right so far it's...
Sunday, March 11, 2012 at 11:42pm

trig
City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?
Sunday, March 11, 2012 at 7:09pm

trig
City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?
Sunday, March 11, 2012 at 7:09pm

trig
City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?
Sunday, March 11, 2012 at 7:07pm

trig
If sec theta = radical 5, what is the exact value of cos theta
Sunday, March 11, 2012 at 12:33pm

trig
If sec theta = radical 5, what is the exact value of cos theta
Sunday, March 11, 2012 at 12:32pm

trig
A ship sails 40 miles SOUTH and 15 miles EAST. Find the bearing from where it began? HELP.
Sunday, March 11, 2012 at 12:20pm

trig or geom
i have to use pythagorean theorem to find the leg-measure of x. in the formula, x would be a^2. the hypotenuse is 11 and "b" is unknown. there is also a cosine with a measure of .4 at the top-most angle.. what is x? i don't know how to use cosine with the problem
Sunday, March 11, 2012 at 10:38am

Trig.
finnd a possible measure of the angle drawn in standard position that passes through the points (ã2,-ã2)
Sunday, March 11, 2012 at 9:59am

calculus
find max, min and saddle points of the give function f(x,y)=sin(x)+sin(y)+sin(x+y) 0<=x<=pi/4 0<=y<=pi/4 i have that dz/dx=cos(x)+cos(x+y) dz/dy=cos(y)+cos(x+y) and i set them equal to zero but im kinda confused on how to really solve that. i mean i got an answer ...
Friday, March 9, 2012 at 9:30pm

Geometry/trig
A ladder, 17 feet long, leans against a wall at a 49 degree angle to the ground. How far up the wall does the ladder reach?
Friday, March 9, 2012 at 5:38pm

trig
Find all angles in degrees that satisfy the equationtan∝ +√3=0
Friday, March 9, 2012 at 4:50pm

Trig
If CSC X = 4 in the quadrant 1, what is COS X?
Friday, March 9, 2012 at 4:06pm

Alg 2 trig
Write a sine equation for period= pie, amplitude=1/2, vertical shift up 1 and phase shift left pie/4. How would the equation be written?
Friday, March 9, 2012 at 11:05am

trig
what is the exact value of cos(x+y) if tan=x sqare root 3 over 3 and sin y=square root 2 over 2?
Thursday, March 8, 2012 at 10:59pm

Trig
How do you do this? 1-sin^2x/csc^2 x-1
Thursday, March 8, 2012 at 1:52pm

Trig
HELP!!!! I dont know how to do the trig identity with this problem csc^4 x-cot^4x= Csx^2 x + cot^2x
Thursday, March 8, 2012 at 9:04am

trig
Simplify the expression cos^2 x (sec^2 x-1)
Thursday, March 8, 2012 at 8:32am

Trig Proofs!
I'm having trouble solving this proof. Can you help? cos^3+sin^3/cosx+sinx = 1-sinxcosx Thanks!:)
Thursday, March 8, 2012 at 12:50am

trig
solve each equation for è, giving a general formula for all of the solutions: 6. tanè=-1 7. sin(è/2)=1/2 Please show step by step on how to solve these. Im not sure on how to do them. Thank you for your help!
Wednesday, March 7, 2012 at 7:21pm

trig.
A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle if the angle of elevation of the ladder is 80°
Wednesday, March 7, 2012 at 6:20pm

trig.
A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle if the angle of elevation of the ladder is 80°
Wednesday, March 7, 2012 at 6:19pm

trig
if sin a=4/5 and is quadrant 2 and sin b= 8/17 and is in quadrant 1, find cos (a-b)
Wednesday, March 7, 2012 at 6:19pm

trig
16. Let W(ƒá ) be a point in Quadrant I on the unit circle with center O. W(ƒá )B is perpendicular to the x-axis at B, OB = 0.6. and W(ƒá )B ƒ­ 0.8. Find:
Tuesday, March 6, 2012 at 11:33pm

Pre-Cal
given the function y=2sin3x-1, identify the following below. also show its graph for the primary cycle. (identifying parts of a trig. equation) asymptotes= k= c= axis= primary cycle= period=
Tuesday, March 6, 2012 at 1:18pm

ALG/TRIG
I cannot seem to get the right answer. Animal Pulse Rate According to one model, an animal’s heart rate varies according to its weight. The formula N(w)=885w^-1/2 gives an estimate for the average number N of beats per minute for an animal that weighs w pounds. Use the ...
Tuesday, March 6, 2012 at 6:21am

ALG/TRIG
Lost is an understatement..please help me understand this. Orbits and Distance Johannes Kepler (1571–1630)discovered a relationship between a planet’s distance D from the sun and the time T it takes to orbit the sun. This formula is , where T is in Earth years and ...
Tuesday, March 6, 2012 at 2:22am

Trig
Please help. I can't get this problem at all. When two bubbles cling together in midair their common surface is part of a sphere whose center D lies on the line passing through the centers of the bubble. Also, angles ACB and ACD are 60 degrees. Show that the radius r of ...
Monday, March 5, 2012 at 10:13pm

Trig
Prove sin(α+β)sin(α-β)=cos​^2β-cos^2α
Monday, March 5, 2012 at 8:23pm

Trig
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?
Monday, March 5, 2012 at 8:23pm

Trig
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
Monday, March 5, 2012 at 8:22pm

Trig
Prove (3cosθ-4sinθ)^2+(4cosθ+3s​inθ)^2=25
Monday, March 5, 2012 at 8:02pm

Trig
Prove sin(α+β)sin(α-β)=cos​^2β-cos^2α
Monday, March 5, 2012 at 8:01pm

Trig
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?
Monday, March 5, 2012 at 8:01pm

Trig
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
Monday, March 5, 2012 at 8:00pm

trig
Q1: Prove cos^2t+4cost+4/cost+2=2sect+1/sect Q2: A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?
Monday, March 5, 2012 at 7:51pm

Trig
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
Monday, March 5, 2012 at 7:40pm

Trig
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?
Monday, March 5, 2012 at 7:38pm

Trig
prove sin(α+β)sin(α-β)=cos​^2β-cos^2α
Monday, March 5, 2012 at 7:37pm

geom/trig
A 40 ft ladder leans against a wall so the base of the ladder is 11 feet away from the base of the wall . What angle does the ladder make with the wall?
Monday, March 5, 2012 at 7:31pm

Trig
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?
Monday, March 5, 2012 at 7:18pm

Trig
prove sin(α+β)sin(α-β)=cos​^2β-cos^2α please help... this is the only one I didn't understand out of all my homework...
Monday, March 5, 2012 at 7:12pm

Trig
prove sin(α+β)sin(α-β)=cos​^2β-cos^2α
Monday, March 5, 2012 at 7:00pm

trig
if sin 7x = cos x+10 find the value of x
Monday, March 5, 2012 at 6:00pm

trig
find the general solutions to the equations: 1) sec x = -2 2) 2 sin^2 x = 1 3) cos^2 x - 2cos x + 1 = 0
Monday, March 5, 2012 at 5:45pm

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