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December 18, 2014

Homework Help: Math: Trigonometry

Recent Homework Questions About Trigonometry

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Trig
Suppose sin A = 12/13 with 90º≤A≤180º. Suppose also that sin B = 7/25 with -90º≤B≤0º. Find tan (A - B).
Tuesday, September 17, 2013 at 11:22pm

Trig
Suppose sinA = 12/13 with 90º≤A≤180º. Suppose also that sinB = -7/25 with -90º≤B≤0º. Find cos(A - B).
Tuesday, September 17, 2013 at 11:22pm

Trig
Let sin A = 12/13 with 90º≤A≤180º and tan B = -4/3 with 270º≤B≤360º. Find tan (A + B).
Tuesday, September 17, 2013 at 11:22pm

Trig
suppose tan theta equal 4 and theta lies in the third quadrant. find the values of sec theta
Friday, September 13, 2013 at 2:03am

trig
Let sin A = 12/13 with 90º≤A≤180º and tan B = -4/3 with 270º≤B≤360º. Find tan (A - B).
Thursday, September 12, 2013 at 11:51pm

trig
Evaluate and simplify tan 5π/12.
Thursday, September 12, 2013 at 11:47pm

trig
This identity means that translating a basic sine graph 3π/2 units to the right produces a basic cosine graph. True or False? sin(X-(3(pi)/2)) = cosX
Thursday, September 12, 2013 at 11:43pm

trig
How do you solve sin(e^x)=0 for x? The question is "find the smallest number x such that sin(e^x)=0".... but I can't even get AN answer lol! Much appreciated!
Wednesday, September 11, 2013 at 8:29pm

trig
How do you solve sin(e^x)=0 for x? The question is "find the smallest number x such that sin(e^x)=0".... but I can't even get AN answer lol! Much appreciated!
Wednesday, September 11, 2013 at 8:29pm

trig
if 60 m of fencing is available for a rectangular garden, one side of which is against a barn, what areb the dimensions of the garden that will give the maximum area?
Thursday, August 29, 2013 at 9:44pm

trig
u = (9, 2) v = (-5, -2) 2u - 3v = ?
Wednesday, August 28, 2013 at 3:07pm

Trig hep, please? Thank you!
1. Find the exact value of sin(195(degrees)) 2. If cot2(delta)=5/12 with 0(<or =)2(delta)pi, find cos(delta), sin(delta) , tan(delta). 3.find the exact value of sin2(x) if cos(x)= 4/5. (X is in quadrant 1) 4. Find the exact value of tan2(x) if sin(x)=5/13. ((X) in quadrant ...
Saturday, August 17, 2013 at 10:51pm

trig help much appreciated! :))
1. Find the complete exact solution of sin x = . 2. Solve cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places. 3. Solve tan2 x + tan x – 1 = 0 for the principal value(s) to two decimal places. 4. Prove that tan2  – 1 + cos2  = ...
Friday, August 16, 2013 at 4:53pm

trig
prove that :cosA-sinA+1/cosA+sinA-1=cosecA+cotA
Friday, August 16, 2013 at 1:16pm

trig
PROVE: Cos 2theta = .5 (cot theta - tan theta) Please help me
Wednesday, August 14, 2013 at 3:32pm

Trig
Given that csc θ = -4 and tan θ > 0, find the exact value of a. x b. sin θ c. cos θ d. r e. sec θ f. cot θ
Wednesday, August 7, 2013 at 5:20am

Trig
Given that tan θ = - (√3/8) and θ is in QII, find the exact value of a. r = b. csc θ c. cos θ d. cot θ
Wednesday, August 7, 2013 at 5:20am

Trig
Given that cos θ = 5/13 and θ is in QIV, find the exact value of a. y b. sin θ c. sec θ d. tan θ
Wednesday, August 7, 2013 at 5:19am

trig
tan200(cot10-tan10)
Friday, August 2, 2013 at 6:00am

trig
tan200(cot10-tan10)
Friday, August 2, 2013 at 5:57am

trig
Find all solutions of cos (x) + 1/2 sec (x) = -3/2 in the interval (2pi, 4pi) (Leave your answers in exact form and enter them as a comma-separated list.)
Wednesday, July 31, 2013 at 6:03pm

trig
the base of a trapezoid are 22 and 12 respectively. the angle at the extremities of one base are 65 degree and 45 degree respectively. find two legs?
Wednesday, July 31, 2013 at 6:10am

trig
Given that P=(-1,8) and Q=(-2,1), find the component form and magnitude of the vector 3 PQ.
Sunday, July 28, 2013 at 12:45pm

trig
Which expression is equivalent to csc x - sin x?
Monday, July 22, 2013 at 8:10pm

trig
use a half-angle identity to find the exact value of tan 105 degrees.
Monday, July 22, 2013 at 8:10pm

trig
Write the standard form of the equation where p=π and o=7π/12
Monday, July 22, 2013 at 8:09pm

trig
A bird at the top of a tree looks down at a field mouse with an angle of depression of 65 degrees. If the field mouse is 30 meters from the base of the tree, find the distance from which the field mouse to the bird's eyes. Round the answer to the nearest tenth.
Monday, July 22, 2013 at 8:08pm

Trig
Find all solutions in the interval 0 degrees<θ<360 degrees. If rounding necessary, round to the nearest tenth of a degree. 17sec2 θ − 15tanθsecθ − 15 = 0
Monday, July 22, 2013 at 3:55pm

trig
A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 12 knots with heading 140°, and the second tugboat is traveling at a speed of 17 knots with heading 200°. Find the resulting speed and direction of the barge. (Round your answers to the ...
Sunday, July 21, 2013 at 10:58pm

trig
An object suspended from a spring is oscillating up and down. The distance from the high point to the low point is 30 cm, and the objects take 4 sec to complete 5 cycles.For the first few cycles the distance from the mean position, d(t), in cm with respect to the time t sec is...
Saturday, July 20, 2013 at 3:27pm

trig
1. A Ferris wheel with a radius of 7m makes one complete revolution every 16 s. The bottom of the wheel is 1.5m above ground. a)Find the equation of the graph b)predict how the graph and the equation will change if the Ferris wheel turns more slowly c) test your predictions ...
Saturday, July 20, 2013 at 3:13pm

trig
tan(7π/4) + tan(5π/4) Does this = 0
Thursday, July 18, 2013 at 10:49pm

trig
each wheel of a bicycle is of radius is 1.1 ft. if the wheels are making 4 revoultions per second how fast is the bicycle moving
Thursday, July 18, 2013 at 5:05pm

Calculus
Find the positive value of x which satisfies x = 4.3cos(x). Give the answer to six places of accuracy. Remember to calculate the trig functions in radian mode
Wednesday, July 17, 2013 at 10:47am

trig
Simplify: csc^2 x sec x / sec^2 x + csc^2 x
Tuesday, July 16, 2013 at 12:36pm

college trig
find the radius of a pulley if rotating the pulley 108.03 degrees raises the pulley 37.3mm
Monday, July 15, 2013 at 1:34pm

trig
simplify the expression. tan(π/2-x)tanx
Sunday, July 14, 2013 at 8:48pm

trig
simplify the expression. cos^2x+sin^2x/cot^2x-csc^2x
Sunday, July 14, 2013 at 6:22pm

trig
simplify the expression. (sin^2x+cos^2x) - (csc^2x-cot^2x)
Sunday, July 14, 2013 at 10:57am

trig
simplify the expression. cot^2(x)-csc^2(-x)
Sunday, July 14, 2013 at 10:37am

trig
simplify the expression. -sin^2x-cos^2x
Saturday, July 13, 2013 at 6:04pm

trig
use basic identities to simplify the expression. csc θ cot θ / sec θ
Saturday, July 13, 2013 at 12:49pm

(pls help) Trig
point P and Q are respectively 24m north and 7m east of point R. What is bearing of Q and P to the nearest whole degree.(a)52(b)164(c)134(d)159
Sunday, July 7, 2013 at 6:38am

trig
A turntable in a shop makes 36 revolutions per minute. How many revolutions does it make per second? My answer is 216 revolutions per second. Am I right? Thanks.
Saturday, July 6, 2013 at 9:23am

trig
Through how many degrees does the minute hand of a clock moves in 5 minutes? In 1 1/2 hours?
Saturday, July 6, 2013 at 9:21am

Trig
Suppose a CD player makes 48 revolutions per minute. Through how many degrees will a point on the edge of a CD move in 1 minute? In 2 sec?
Friday, July 5, 2013 at 10:32am

Trig
A tire is rotating 600 times per minute. Through how many degrees does a point on the edge of the tire move in 1 minute?
Friday, July 5, 2013 at 10:30am

trig
Find all solutions in the interval [0,2pi]. sin 2x + sin x = 0
Thursday, July 4, 2013 at 4:14pm

trig
Find all real numbers in the interval [0,2pi) that satisfy the equation. cos^2 x+2 cos x+1 = 0
Thursday, July 4, 2013 at 4:12pm

Trig
Multiply and Simplify. ( 1 + cot θ )^2
Thursday, July 4, 2013 at 12:50am

trig
A wheel with a 24-inch diameter is turning at the rate of 32 revolutions per minute. To the nearest inch per minute, what is the linear velocity of a point on the rim?
Wednesday, July 3, 2013 at 8:22pm

trig, math
Given triangle ABC with a = 16, b = 14, and β = 54°, find the value of c.
Wednesday, July 3, 2013 at 11:09am

trig, math
A 175-pound force and a 230-pound force are acting on the same point in directions that differ by 42°. What is the angle that the resultant makes with the 175-pound force?
Wednesday, July 3, 2013 at 11:06am

Trig
Determine the number of triangles with the given parts. b=24 c=29 B=40deg I got 1
Tuesday, July 2, 2013 at 11:45am

trig
Find all solutions of the equation. Leave answers in trigonometric form. x^5-1024=0 I got 4(cos tehta + i sin tehta), tehta = 0, 2pi/5, 4pi/5, 6pi/5, 8pi/5 is this right
Tuesday, July 2, 2013 at 10:29am

trig, math
Which of these functions has period 7? A)y= cot 7/pi x B)y= tan pi/7 x C)y= sin 7/pi x D)y= cos pi/7 x
Monday, July 1, 2013 at 1:34pm

trig
Write the complex number in trigonometric form, using degree measure for the argument. -12 - 16i
Friday, June 28, 2013 at 9:36pm

trig
Convert the rectangular coordinates to polar coordinates, using radian measure for the angle. (6, -6) 6√(2),7π/4 OR -6√(2),5π/4
Friday, June 28, 2013 at 9:16pm

trig
Solve the equation. Express your answer in trigonometric form. x^5 - 11 = 0
Friday, June 28, 2013 at 12:39pm

trig
Find the indicated roots. Write the answer in trigonometric form. Fourth roots of 256(cos 220° + i sin 220°)
Friday, June 28, 2013 at 12:38pm

trig
Use De Moivre's theorem to simplify the expression. Write the answer in a + bi form. [2(cos 240° + i sin 240°)]^5
Friday, June 28, 2013 at 12:08pm

trig
Find the dot product a*b. a= (5,-9), b=(4,-3)
Friday, June 28, 2013 at 11:36am

trig
estimate the components of the vector. Round to one decimal place. [v] = 33.9, θ = 65.9° Find the horizontal and vertical components of v, and write in component form.
Friday, June 28, 2013 at 11:30am

trig
find the indicated vector. let u = (-9,1), v=(-5,9). Find 3u+v
Friday, June 28, 2013 at 11:28am

trig, math
In a right triangle with g the right angle, b = 86.5 and c = 125.8. What is β ?
Thursday, June 27, 2013 at 12:26pm

trig, math
A stairway must be built to a deck that is 20 feet above ground level. To the nearest half foot, how far from the base of the deck, on ground level, should the beginning of the stairway be placed so that the stairway forms a 60° angle from the ground?
Thursday, June 27, 2013 at 11:41am

trig
Find z1z2 and z1/z2 for the pair of complex numbers using trigonometric form. z1=4+9i, z2=-5-5i I got z1z2 = 25-65i But cannot find the z1/z2.
Wednesday, June 26, 2013 at 10:12pm

trig
slove the equation exactly over the interval [0, 2pi) sinx=1-2sin^2x
Friday, June 21, 2013 at 1:13pm

trig
use an identity to write the expression as a single trignometric function. squ root 1-cos48°/2
Friday, June 21, 2013 at 1:07pm

trig
choose the expression that is equivalent to the given expression. 2 cos^2 4x-1
Friday, June 21, 2013 at 12:53pm

trig
Use the fundamental identities to simplify the expression. cos^2θ/sin^2θ+cscθsin_​2; I got tan^2theta
Friday, June 21, 2013 at 12:46pm

trig
fidn all values of tehta in [0, 360) that satisfy the equation. √(3)tan(θ/2)=-1 I have four choices 300, 330, 150 , 120 and i got 120
Friday, June 21, 2013 at 12:40pm

trig
Multiply and simplify. (cos x - sin x)^2
Friday, June 21, 2013 at 12:36pm

trig
Choose the expression that is equivalent to the given expression. sin 6x tan 3x I got 2 sin^2 3x
Friday, June 21, 2013 at 12:33pm

trig
Write the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the expression. 2tan 2pi/3 / 1-tan^2 2pu/3
Friday, June 21, 2013 at 12:26pm

trig
Solve the right triangle with the given sides and angles. a = 3.0, B = 31.0°
Friday, June 21, 2013 at 11:46am

Physics (trig)
The height of an outdoor basketball backboard is 12 1/3 feet and the backboard casts a shadow 19 1/5 feet. Find the angle of elevation of the sun (answer in units of degrees). Can someone help me with the formula? Thank you!
Wednesday, June 19, 2013 at 9:10pm

trig
Find all values of ¸ in [0°, 360°) that satisfy the equation. 2 sin 2θ - √(3) = 0
Monday, June 17, 2013 at 9:47am

trig
Find all real numbers in [0, 2π) that satisfy the equation. cos 2x = √(2)/2
Monday, June 17, 2013 at 9:46am

trig
Find all angles in degrees that satisfy the equation. Round approximate answers to the nearest tenth of a degree. tan α = -1.85
Monday, June 17, 2013 at 12:58am

trig
Use a sum or difference identity to find the exact value. tan 25deg + tan 5deg / 1-tan 25deg tan 5deg
Monday, June 17, 2013 at 12:40am

trig
Find cos(A+B). cos A=1/3 and sin B=-1/2, with A in quadrant I and B in quadrant IV.
Sunday, June 16, 2013 at 11:20pm

trig
if 5sin theta + 12cos theta is equal to 13 find the value of tan theta
Saturday, June 15, 2013 at 8:41am

Algebra 3 and trig
An ocean liner is 177 miles due west of lighthouse A. Lighthouse B is 265 miles due south of lighthouse A. Find the distance from lighthouse B to the liner and the bearing of the ocean liner from lighthouse B.
Wednesday, June 12, 2013 at 6:22pm

trig
for the given angle, name the quadrant in whihc the terminal side lies. -350deg
Wednesday, June 12, 2013 at 2:25pm

trig
identify the quadrant in which 0 lies. sin < 0 and sec > 0
Wednesday, June 12, 2013 at 2:02pm

trig
determine the period of the function. y = cot 4t
Wednesday, June 12, 2013 at 1:26pm

trig
Identify the quadrant in which θ lies. sin > 0 and tan < 0
Tuesday, June 11, 2013 at 7:59pm

trig
Find the trigonometric function value of angle θ. Cos θ = 2/7 and θ is in quadrant IV. Find sin θ.
Tuesday, June 11, 2013 at 7:30pm

trig
The point (-3, 4) is on the terminal side of angle θ in standard position. Find cot θ.
Tuesday, June 11, 2013 at 7:24pm

trig
Given that θ is an angle in standard position whose terminal side contains the given point, provide the exact value of the indicated function. (-2, -3) Find sec θ.
Tuesday, June 11, 2013 at 4:31pm

trig
ferris wheel one has a 40ft diameter, revolves once every 30 seconds and is 5ft above ground. Ferris wheel two has a diameter of 20feet, revolves once every 15seconds and is 2 feet above the ground. each angular velocity?? each linear velocity??
Tuesday, June 11, 2013 at 3:26pm

math - trig
1. Find csc A, cos A and tan A of an angle A whose terminal side contains (– 12, – 5). 2. Find sin X, sec X and cot X of an angle X whose terminal side contains (– 3, 5).
Tuesday, June 11, 2013 at 4:11am

Trig
The angle of elevation from a point on the ground to the top of a tower is 37deg5'. The angle of elevation from a point 120 feet farther back from the tower is 29deg5'. Find the height of the tower (to the nearest foot).
Monday, June 10, 2013 at 7:06pm

Math Help
Permutation and combinations (Trig/alg2 class) In how many ways can all the letters in SEYCHELLES be arranged?
Sunday, June 9, 2013 at 11:51pm

MATH -
Permutation and combinations (Trig/alg2 class) In how many ways can all the letters in SEYCHELLES be arranged?
Sunday, June 9, 2013 at 2:52pm

Trig
Find the reference angle θ'. θ= -7pi/9
Saturday, June 8, 2013 at 11:55pm

Trig
Find the area of a sector with the given central angle θ in a circle of radius r. θ = 90°, r = 6 cm
Saturday, June 8, 2013 at 11:03pm

Math Trig Find Quadrant I II III IV
In which quadrant is the terminal side of angle A? A = -5π/6 a. Quadrant III b. Quadrant I c. Quadrant II d. Quadrant IV
Saturday, June 8, 2013 at 10:49pm

trig
what are the values of the angle in the interval 0<the angle<360 that satisfy the equation tan beta- radical 3=o
Thursday, May 30, 2013 at 10:57pm

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