# Questions on Algebra: Trigonometry answered by real tutors!

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 Algebra: Trigonometry Solvers Lessons Answers archive Quiz In Depth

 Question 598647: the population of silver city was 347 when silver was discovered.ten years later the population was 6780 assuming exponential growth what was the population five years after the discovery of silver (y=ae^kx) Click here to see answer by stanbon(57342)

 Question 598607: express in polar form. I have tried and tried but cannot come up with an answer for this problem - not one that matches the multiple choice list I was given, anyways. The given choices are a: 10(cos 11pi/6 + i sin 11pi/6) b: 10(cos 11pi/6 - i sin 11pi/6) c: 5(cos 11pi/6 + i sin 11pi/6) d: 10(cos 5pi/3 + i sin 5pi/3) Please help me. Click here to see answer by Alan3354(30993)

 Question 598873: To the nearest degree, the values of x in the interval 0° ≤ x < 360° that satisfy the equation 6 cos2 x – 7 cos x + 2 = 0 include all of the following except a.)48 b.)60 c.)132 4.)312 Click here to see answer by KMST(1868)

 Question 599013: If 2sin^2θ – cos^2θ = 2, then find the value of θ. Click here to see answer by stanbon(57342)

 Question 599104: I believe I did the problem correctly, but would like some assurance. Proving a trig identity: cosx/cscx-sinx=tanx cosx/cscx-sinx = cosx/1/sinx-sinx = cosx/1/sinx-sinx/1 x sinx/sinx = cosx/1-sin^2x/sinx = cosx/cos^2x/sinx = cosx/1 x sinx/cos^2x = cosxsinx/cos^2x (cancel out) = sinx/cosx = tanx Click here to see answer by jim_thompson5910(28595)

 Question 599248: A CD player spins at about 200 revolutions per minute. Through what angle does a point on the edge of the CD spin in one minute? Click here to see answer by Alan3354(30993)

 Question 599287: Explain how to transform tan^2(theta) cos^2(theta)+cot^2(theta)sin^2(theta) into 1. Click here to see answer by jim_thompson5910(28595)

 Question 599295: rewrite the function with a positive angle 4 sin(-8x) Click here to see answer by jim_thompson5910(28595)

 Question 599733: solve for data such that 0 degrees the less than data less than 360 Click here to see answer by stanbon(57342)

 Question 600086: Find the solutions of the equation that are in the interval [0, 2π). (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) cos u − cos 2u = 0 Click here to see answer by htmentor(789)

 Question 600351: Snow white and the seven dwarfs went to work as carpenters. Each dwarf earned \$20. Snow white earned \$3.50 more than the average of the eight. How much did snow white earn? Click here to see answer by w_parminder(53)

 Question 600414: Hey i have a question! So the sides of an AngleABC lengths are 3,4 and 5. What are the three possible values of the cosine of angle A? I am really stuck! Click here to see answer by jim_thompson5910(28595)

 Question 600423: The problem that i struggle with: Given that angleC= 45 degree, a=20 and b=17. What is the length of side c in angleABC to the nearest tenth? Click here to see answer by lwsshak3(6505)

 Question 599926: Find the domain, period, range, and amplitude of the cosine function. y = -6cos4x I need to know how to get the answer to this. Click here to see answer by lwsshak3(6505)

 Question 599927: What is the value of the expression? tan (-5pi/6) I'm not sure if I wrote that correctly. Click here to see answer by lwsshak3(6505)

 Question 600426: Hi! I don't know how to solve this problem: For angleKMH with side lengths k,m, and h, use the law of cosines to write an equation to find the length of side m. Click here to see answer by lwsshak3(6505)

 Question 600432: What is the smallest value of x that makes the equation 2/square root of 3 (sin x ) = 1 true? I really don't get it! Hope you can help me with this problem. Click here to see answer by lwsshak3(6505)

 Question 600475: if sec(2x-30) = csc(x+12) what is the value of x? Click here to see answer by lynnlo(4164)

 Question 600639: I need to see the steps of the following problem. Write each of the following in terms of sin theta and cos theta, then simplify if possible: sin theta --------- csc theta Click here to see answer by jim_thompson5910(28595)

 Question 600653: graph y=3sin(2x)=1 i know tbe amplitude is 3 but the 2x is confusing me i understand when you have to graph for ex 3sin(x)+1 Click here to see answer by Alan3354(30993)

 Question 600688: hey please help me with this problem,and if possible can you show me the work that leads to the answer. thank you very much if cot x = 5/12 and cos x > 0 find csc Click here to see answer by jim_thompson5910(28595)

 Question 600696: greetings i really need help with this problem i don't understand.and it will really help me if you show the work. find the value of sin(arc cos 4/5),express the result as a fraction Click here to see answer by lwsshak3(6505)

 Question 600740: if A is a positive acute angle and tan A = cot 30 then what is the value of tan A Click here to see answer by jim_thompson5910(28595)

 Question 600742: what is the expression csc x ÷ cot x equivalent to ? Click here to see answer by Alan3354(30993)
 Question 600742: what is the expression csc x ÷ cot x equivalent to ? Click here to see answer by jim_thompson5910(28595)

 Question 600726: hello tutors i really need help with this problem. what is the expression of tan (-220) is equivalent to ? Click here to see answer by Alan3354(30993)

 Question 600725: I have a quick question! If SinX= Square root of 2 over 3, than cos2X= what in fraction form? Click here to see answer by richard1234(5390)

 Question 600728: i need help with this problem and would appreciate your help which expression is equivalent to sin 230° Click here to see answer by Alan3354(30993)

 Question 600837: How do I find an expression equivalent to sec theta tan theta cos theta? Click here to see answer by Alan3354(30993)

 Question 601004: Hi. How do I find the exact numerical value of the expression sin120degrees cos150degrees - tan^2 135degrees? thanks. Click here to see answer by Alan3354(30993)

 Question 601028: What is the integral or antiderivative of cos(x^2) ? I can do cos^2(x), cos^n(ax), etc, but not cos(x^2). Click here to see answer by richard1234(5390)

 Question 601110: What is the value of cos(arctan square of 3? Click here to see answer by solver91311(16885)

 Question 601193: which expression is equivalent to sin 230° (1) sin 50 (2) cos 50 (3) -sin 50 (4) -cos 50 Click here to see answer by solver91311(16885)

 Question 601201: greetings im in desperate need of help with this problem.i will comment and like your profile guaranteed and please show the work. find all values of ⊖ in the interval 0°≤ ⊖ < 360° that satisfy the equation 2cos²⊖ = cos ⊖ + 1 Click here to see answer by Alan3354(30993)

 Question 601190: the expression (cot x)(sec x) is equivalent to ? (1) sin x (2) cos x (3) csc x (4) sec x Click here to see answer by jim_thompson5910(28595)

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, 9496..9540