Questions on Algebra: Trigonometry answered by real tutors!

Tutors Answer Your Questions about Trigonometry-basics (FREE)

Question 302863: Find the distance between the lines 2x+3y-15=0 and -3x-2y=8
Click here to see answer by Alan3354(30993)

Question 302858: In a right triangle you know that the sine of one angle is 4/5 . Find the cosine and tangent of this angle.
Click here to see answer by london maths tutor(243)

Question 302970: State the amplitude, period, phase shift, and vertical shift for the following function, then graph the function. y = 2 sin (0 + pi/2) - 3
Click here to see answer by stanbon(57307)

Question 303127: The solutions of cos 2x = 0, in the interval 0 < x < 360
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Question 303183: use synthetic substitution to find the value of f(-2) for f(x)= x^3-3x^2-x-9
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Question 303176: if x varies inversely as y and x=2 when y=8 find x when y=17
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Question 303196: The pyramid is 146.5 m high. When Rowena stands far away from the pyramid, her line of sight to the top of the pyramid forms an angle of elevation of 20 degrees with the ground. What is the horizontal distance between the center of the pyramid and Rowena?
Thanks for your help.

Click here to see answer by nyc_function(2733)

Question 303195: The problem states - Given J (-3,4) and K (-7, -2), find the magnitude of JK to the nearest tenth.
Please help me with this.
Thanks
Click here to see answer by nerdybill(6958)

Question 303177: if y varies directly as x and inversely as z^2, and y=3 when x=2 and z=4, what is the value of x when y=6 and z=2
Click here to see answer by Fombitz(13828)

Question 303177: if y varies directly as x and inversely as z^2, and y=3 when x=2 and z=4, what is the value of x when y=6 and z=2
Click here to see answer by london maths tutor(243)

Question 303619: Find sine theta if cosine theta= 0.67
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Question 303593: sin1/2 feda equals cos squared feda
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Question 303763: sinx is less than 0. what quadrant does this lie in. please help if possible. thank you
Click here to see answer by Alan3354(30993)

Question 303762: tan x is greater than 0. what quadrant does this lie in. thank you for any help
Click here to see answer by Alan3354(30993)

Question 304115: i must rewrite this tri function using angles between 0 and 90
sin 150 degrees= sin? thank you for the help
Click here to see answer by dabanfield(803)

Question 304097: How do you find the radian measure of the central angle of a circle of radius 1 yard that intercepts an arc of length 4 yards?
Click here to see answer by dabanfield(803)

Question 304230: please change 45 degrees into radians but I need to see how you worked the problem out
Click here to see answer by Stitch(352)

Question 304230: please change 45 degrees into radians but I need to see how you worked the problem out
Click here to see answer by josmiceli(9671)

Question 304261: How do you verify this problem using trig identities?
cscx/cosx-cotx= tanx
Click here to see answer by stanbon(57307)

Question 304415: Convert sqrt(3)x-y+3= 0 to a normal form of a line.
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Question 304442: Find all solutions:
2cos(x)+1=0
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Question 304573: i must show that cos theta=sinthetacottheta. i would appreciate any help possible. thank you
Click here to see answer by CharlesG2(828)

Question 304573: i must show that cos theta=sinthetacottheta. i would appreciate any help possible. thank you
Click here to see answer by Stitch(352)

Question 304623: what is the domain of y =-4sin(3x)
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Question 304674: how do i solve cos theta minus 1 equals negative one
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Question 304682: if tan0=8/3 in quadrant 3, what are cos20, sin0/2, cos0/2
Click here to see answer by Alan3354(30993)

Question 304701: A boat is traveling in a triangular manner. The boat traveled 213 miles from point a to point b.It then took a 23 degree turn going from point b to point c and traveled 105 miles to get there. At what angle must it turn to get from point c to point a?
Click here to see answer by Theo(3458)

Question 304856: Find (1/sqrt2 + i/sqrt2)^8
-8
256
8
1
None
Click here to see answer by stanbon(57307)

Question 304800: graph y=(0.75)^x
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Question 304887: draw a 270° angle in standard position
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Question 304853: The polar graph of r= 3sin(2theta) is:
a 3 leafed rose
a circle
a 4 leafed rose
an 8 leafed rose
None
Thank you for helping:)
Click here to see answer by themathtutor2009(81)

Question 305065: If X is an acute angle and sin X= 1/2, then cos X= ? What is the answer and how do I get it? I'm taking accuplacer on Monday hopeful to avoid having to take intermediate algebra over the summer. Thanks to all for all your help, Mike
Click here to see answer by stanbon(57307)

Question 305133: 4(b-3)=7
Click here to see answer by rfer(12657)

Question 305188: how do i find the exact value of cos 810 degrees?
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Question 305370: What is the remeinder of
(x^2-2x-4)/(x+1)
Click here to see answer by Fombitz(13828)

Question 305783: what is the simplified form of sin^2 (pie/2-x) tan^2x+cos^2(-x)+tan^2x?
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Question 305799: VERSIN(A+B)*VERSIN(A-B)
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Question 305808: find the degree measure of an angle of 4.23 radians
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Question 305762: On a piece of graphing paper draw lines 8 cm long at angles 0 degrees, 30 degrees, 90 degrees, and 135 degrees. Find the x and y component?
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Question 305843: f(X)= 3x+8,g(X)= 4x^2 find(f+g)(x)
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Question 305912: I would like to know this. Is there an equation that can help me figure out the sine of an angle using the measure of the angle? Thank you very much for trying to answer this question.
Click here to see answer by Fombitz(13828)

Question 305914: Is there an equation that can find the value of the tangent of an angle using the measure of the angle? Thank you very much!
Click here to see answer by Fombitz(13828)

Question 305936: Suppose 5x + 2y = -4 and x - 3y = 5. Find x-y
Click here to see answer by Fombitz(13828)

Question 305996: Can you please help me with this question ?
A waterslide is 400 yards long with a vertical drop of 36.3 yards. Find the angle of depression of the slide and round to the nearest tenth.
I believe to set this problem up, that the 400 goes on the bottom part of the trangle & the 36.3 goes on the vertical part & X goes on the slanted part. But I need help solving it. Thank you !
Click here to see answer by josmiceli(9671)

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