Questions on Algebra: Trigonometry answered by real tutors!

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Question 260857: what is the value of x if a triangle has a side x + 1 and x +3 and x
Click here to see answer by Alan3354(30935)

Question 261029: how to solve for x if 2sin^2x-3sinx=1
Click here to see answer by Greenfinch(383)

Question 261029: how to solve for x if 2sin^2x-3sinx=1
Click here to see answer by jsmallt9(3296)

Question 261230: if one side of a triangle is double the other and the angles opposite these sides differ by 60. show that the triangle is right angled
Click here to see answer by drk(1908)

Question 261459: How do you find the cos of 55 degrees using the sum and difference identity?
cos (x + y) = (cos x) (cos y) - (sin x) (sin y) and
cos (x - y) = (cos x) (cos y) + (sin x) (sin y)
I can't find 2 angles that add or subtract to get 55.
Ex: 315 - 270 = 45 degrees, not 55

Click here to see answer by Edwin McCravy(8879)

Question 261494: when finding the exact value of tan165 and you have split the number into 120+45, would you use the 30 degree or 60 degree for 120. like,sin 60 equals or sin30 equals
Click here to see answer by jsmallt9(3296)

Question 261726: A rectangular solid has a volume of 24 cubic decimeters. If the length,width,and height are all changed to 1/2 their original size, what will be the new volume of the rectangular solid?
Click here to see answer by checkley77(12569)

Question 261880: (f/g)(x) f(x)=6/(x-3) and g(x)=2/(x+2)

(g o f)(x)
Click here to see answer by drk(1908)

Question 261882: solve each of the following
cos theta=-3sin theta
3cos^2theta=5-7sin theta
Click here to see answer by drk(1908)

Question 262061: given a triangle with a=8, c=41 degrees, and b=14 degrees, what is the lenght of c? round the answers to two decimals laces.
Click here to see answer by richwmiller(9132)

Question 262060: convert 7/10 (pi) to degrees
Click here to see answer by Edwin McCravy(8879)

Question 262060: convert 7/10 (pi) to degrees
Click here to see answer by richwmiller(9132)

Question 262059: convert 900 degrees to radians
Click here to see answer by Edwin McCravy(8879)

Question 262174: I have this problem and need the solution and an explanation for it:
0°<=[theta]<360°+cot[theta]=-1.4176[theta]=x
{problem in brackets}
The written form was this:
"If 0deg <= [theta] <360deg and cot[theta] = -1.4176 then determine [theta] to the nearest tenth".
Thank you, Steven

Click here to see answer by Theo(3458)

Question 262343: I'm solving horizontal curve where the radius is 4000m and the subtending angle is 19 degrees. I understand that the formula for CL is 2* Radius sin ( tetha/2). so is that 2*(4000m)sin 19 degrees from there how do i find the arc length S.
Click here to see answer by Alan3354(30935)

Question 262433: I am having a problem with this question...please don't just give me the answer, I would really like to know how to do it. Thanks
f(theta)=3tan(theta)+sin2(theta), find f(pi/6)
Click here to see answer by drk(1908)

Question 262675: What is the exact value of the trigonometric function:
csc 240 degrees?
Click here to see answer by Theo(3458)

Question 262709: how do you find the degree measure of theta if 0 degrees is less than or equal to theta and theta is less than or equal to 360 degrees if the sin of theta is .8706?
Click here to see answer by Alan3354(30935)

Question 262757: finding the six trigonometric functions of the angle theta. (-10/3, -2/3)
Click here to see answer by drk(1908)

Question 262830: Find an equation of the perpendicular bisector of the lina segment AB;A(2,1)B(-2,3)
Click here to see answer by Alan3354(30935)

Question 262830: Find an equation of the perpendicular bisector of the lina segment AB;A(2,1)B(-2,3)
Click here to see answer by drk(1908)

Question 263040: Refer to the graph of y = tan(x) to find the exact values of x in the interval [-Pi/2, 3*Pi/2] that satisfy the equation. Separate your answers with commas.
(a) tan(x) = 0 ; x
Click here to see answer by stanbon(57203)

Question 263161: the length of one leg of a right triangle is 10 ft. the length of the hypotenuse is 2 feet longer than the other leg. find the length of the hypotenuse and the other leg
the length of the hypotenuse=?? ft
the lenght of the other leg=?? ft
Click here to see answer by palanisamy(496)

Question 263185: Refer to the graph of y = sin(x) or y = cos(x) to find the exact values of x in the interval [0, 4*Pi] that satisfy the equation
Click here to see answer by Alan3354(30935)

Question 263601: 4-i is a solution of a quadratic equation with real coefficients. find other the solution.
Click here to see answer by richwmiller(9132)

Question 264217: A ladder leaning against a house makes an angle of 30 degrees with the ground. the foot of the ladder is 7 feet from the foot of the house. How long is the ladder to the nearest foot?
Click here to see answer by mananth(12270)

Question 264218: find the values of the six trigonmetric functions given that cos(theta) is 3/5 and theta terminates in Quadrant IV.
Click here to see answer by stanbon(57203)

Question 264228: i don't really understand how to do this problem. if you could please explain how to do it asap. thank you.
Write the equation of the circle in center and radius form. State the center and the radius:
x^2+y^2-2x+8y-10=0
Click here to see answer by stanbon(57203)

Question 264227: What is the number of degrees in an angle whose radian measure is 7pi/12?
Click here to see answer by Alan3354(30935)

Question 264227: What is the number of degrees in an angle whose radian measure is 7pi/12?
Click here to see answer by stanbon(57203)

Question 264225: the two legs of a right triangle have lenghts of 15 inches and 8 inches. Find the measure of the smaller acute angle.

I tried to do tan=opp/adj, is it on the right path?
Click here to see answer by Alan3354(30935)

Question 264223: The pendulum of a clock swings through an angle of 2.5 radians as its tip travels through an arc of 50 centimeters. Find the lenght of the pendulum, in centimeters.
Click here to see answer by Alan3354(30935)

Question 261382: HI I NEED HELP WITH
Sin(X)-0.1Cos(X) = 0.567
Find the angle X
Thanks M.samari
Click here to see answer by Alan3354(30935)

Question 265236: What are the coterminal angles of:
17pi/5
67pi/2
15pi/9
Click here to see answer by drk(1908)

Question 265625: cos2x=(cos^2)x-(sin^2)x
Click here to see answer by roseo(33)

Question 265631: sin2x=2sinxcosx
Click here to see answer by roseo(33)

Question 265830: Find all solutions of 2cos2 x + 3 cos x + 1 = 0 where x is in radians
between 0 and 2pi.
Click here to see answer by stanbon(57203)

Question 266062: sin(330degrees)
sin(-60degrees)
Click here to see answer by Alan3354(30935)

Question 266238: Find the quotient and remainder when the first polynomial is divided by the second.
x^3-6x^2+3x-1
x-5
Click here to see answer by vksarvepalli(154)

Question 266235: Factor 3x^2-4x-4
Click here to see answer by vksarvepalli(154)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495