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August 30, 2014

Homework Help: Math: Trigonometry

Recent Homework Questions About Trigonometry

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Trig
I need help, I don't remember what to do. Find all solutions of the equation in the interval [0,2pi]. (2cosè+sqrt3)(cscè+1)=0 Write your answer in radians in terms of pi. If there is more than one solution, separate them with commas.
Saturday, May 14, 2011 at 7:18pm

Trig- Check my answer Please
Find the unit vector in the direction of <-1,-2>. Do not approximate any numbers in your answer. I get (-1/sqrt10) and (-3/sqrt10)
Saturday, May 14, 2011 at 5:23pm

trig
if point P is a point on the terminal side of 0, and 0 is in standard position, find sin 0,cos 0 and tan 0. 1. P(-6,8) 2. P (1,3) 3. P (-2,-40), 4. P (-5, -12)
Saturday, May 14, 2011 at 1:00pm

trig
If cos 0 = - 1/2 and tan 0 > 0, find the quadrant that contains the terminal side of 0, and then find the exact values of the other five trig functions of 0.
Saturday, May 14, 2011 at 11:40am

trig
if sin 0 > 0 and tan 0 < 0, what quadrant contains the terminal side of 0.
Saturday, May 14, 2011 at 11:33am

Trig- Check my answer Please
Find the reference angle for -144 degrees. I'm coming up with 504 degrees, but I think I'm missing a step.
Saturday, May 14, 2011 at 8:21am

Trig
I need help solving the two problems below. Thanks For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin. Check all symmetries that apply. 1. y=-sqrt(4-x^(2)) 2. 34x^(2)+12y^(2)=18
Friday, May 13, 2011 at 8:01pm

trig
simplify (sec^2x + csc^2x) - (tan^x +cot^2x) to either a constant or a basic trigonometric function.
Friday, May 13, 2011 at 8:44am

Trig
I need help solving the two problems below. Thanks For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin. Check all symmetries that apply. 1. y=-ã(4-x^(2)) 2. 34x^(2)+12y^(2)=18
Friday, May 13, 2011 at 4:52am

Trig
How can I find the exact value of Sin 480 degrees? Thanks
Thursday, May 12, 2011 at 10:23pm

Trig
Let (theta) be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).
Wednesday, May 11, 2011 at 9:15pm

trig
Let be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).
Wednesday, May 11, 2011 at 9:08pm

trig
how do you graph y=-(1/4)sin(3/4x+pi/8? include the amplitude, period, vertical translation, horizontal shift, and table of values please.
Wednesday, May 11, 2011 at 8:10pm

Trig- Check my answer Please
Use a cofunction to write an expression equal to csc(4ð/11). Is the answer csc(4ð/11)= 1/sin(4ð/11)
Wednesday, May 11, 2011 at 7:31pm

Trig
Use a cofunction to write an expression equal to csc(4ð/11). I need help solving this problem. Thank You
Wednesday, May 11, 2011 at 4:53am

Trig
Cos(2theta)=-1/2 There are 6 solutions, how do i solve this?
Tuesday, May 10, 2011 at 10:32pm

trig
Let (theta) be an angle in quadrant II such that csc(theta)=8/5 Find the exact value of tan(theta) and cos(theta).
Tuesday, May 10, 2011 at 9:31pm

trig
Let (theta) be an angle in quadrant II such that csc(theta)=8/5 Find the exact value of tan(theta) and cos(theta).
Tuesday, May 10, 2011 at 9:30pm

trig
How would you go about finding x and y?? [x-8 2 2y] [9x-16 2 6] [ 2 -7x 7] = [ 2 -7 7] [-4 y-4 2] [-4 -1 2]
Tuesday, May 10, 2011 at 7:52pm

Trig
How would you write the partial fraction decomposition of the rational expresion 1/(x^2)-25? I know that you factor the denominator, so that's 1/(x-5)(x+5). What are the next steps?
Tuesday, May 10, 2011 at 7:45pm

Trig
Find Theta in the degree measure for the indicated quadrant. Show the diagram. cot (Theta)= -(Radical 3/1)in quadrant IV. I got 240 degrees but i dont know how to do the diagram since 240 degrees is in quadrant III. How do you put this in a diagram?
Tuesday, May 10, 2011 at 3:48pm

trig
CosA x cos2A + ((sin2A)^2)/2cosA
Tuesday, May 10, 2011 at 9:23am

trig question
During a 12- hour period, the tides in one area of the Bay of Fundy causes the water level to rise to 6 m above the average sea level and to fall 6 m below average sea level. The depth of the water at low tide is 2m as measured against a pier. Suppose the water is at average ...
Monday, May 9, 2011 at 9:26pm

Trig problem
During a 12- hour period, the tides in one area of the Bay of Fundy causes the water level to rise to 6 m above the average sea level and to fall 6 m below average sea level. The depth of the water at low tide is 2m as measured against a pier. Suppose the water is at average ...
Monday, May 9, 2011 at 6:41pm

trig
find sin if cos(2è)=(4)/(5) and theta terminates in quadrant 1
Monday, May 9, 2011 at 5:53pm

trig
How do you solve cos(2arcsin 1/4) using inverse trig. functions??!! PLEASE HELP ME!
Monday, May 9, 2011 at 11:20am

trig
if sec theta=-5/4 and 180degree < theta< 270degree, find tan theta a.-3/5 b 4/5 c.3/4 d.3/5
Sunday, May 8, 2011 at 5:35pm

trig
1st-the reason i keep change my name because some of my friends are using my computer by their own name to asked questions. we are having a hard time solving each trig problems 2nd- if sin theta=0.6 and 90 degree <theta < 180 degree, find the exact value of sin 2 theta. ...
Sunday, May 8, 2011 at 5:16pm

trig
Determine the value of cos(theta) given that cos(pi − theta) = .2 (A)p.96 (B) .2 (C) −.2 (D) −sqrt.96 (E) None of the above.
Sunday, May 8, 2011 at 4:09pm

trig
What is the cotangent of 0 degree? (A) 0 (B) 1 (C) 1/2 (D) −1 (E) None of the above.
Sunday, May 8, 2011 at 4:08pm

trig
A right triangle has sides of length 5, 12 and 13. What is the sine of the angle opposite the hypotenuse? (A) 1 (B) 5/12 (C) 5/13 (D) 12/13 (E) None of the above.
Sunday, May 8, 2011 at 4:06pm

trig
If csc(x) =1/sqrt7 then sec(x) equals (A)p7/7 (B) 6/7 (C)p6/p7 (D)p7 (E) None of the above.
Sunday, May 8, 2011 at 4:05pm

trig
The tangent of an acute angle equals 1/2. What is the sine of the angle? (A) 1/p3 (B)p5/2 (C) 2/p5 (D) 1/p5 ( E) None of the above.
Sunday, May 8, 2011 at 11:57am

trig
In a right triangle the hypotenuse has length 10 and the the sum of the cotangents of all three angles of the triangle equals 2. What are the lengths of the other two sides of the triangle? (A) 5 and 5p3 (B) 5p2 and 5p2 (C) 1 and3 p11 (D) 4 and 2p21 (E) None of the above.
Sunday, May 8, 2011 at 11:56am

trig
How many solutions does the equation cos(x) + cos(−x) = 0 have if 0 < x < 2pi? (Radian measure is assumed for x.) (A) infinitely many (B) 1 (C) 2 (D) 3 (E) None of the above.
Sunday, May 8, 2011 at 11:54am

trig
A sine wave function f(x) = a sin(bx) has amplitude 10 and period 40. What are the values of a and b? (A) a = 10 and b = 20/pi ( B) a = 10 and b = 1/40 (C) a = 10 and b = pi/20 (D) a = 10 and b = 40 E) None of the above.
Sunday, May 8, 2011 at 11:53am

trig
use a half angle formula to find the exact value of cos 75 degree
Sunday, May 8, 2011 at 9:56am

trig
Find a numerical value of one trigonometric function of x if secxcotx=4 A.cscx=1/4 b.secx=4 c.secx=1/4 d.cscx=4
Sunday, May 8, 2011 at 9:20am

trig
Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.
Sunday, May 8, 2011 at 12:35am

trig
A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the area of T? (A) 50p3/(1 +p3) (B) 10p3/(1 +p3) (C) 50/(3 + 3p3) (D) 10/(3 + 3p3)(E) None of the above.
Saturday, May 7, 2011 at 6:36pm

trig
A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the radian measure of the angle at R? (A) 5pi/24 (B) 5/24 (C) 5pi/12 (D) 5/12 (E) None of the above.
Saturday, May 7, 2011 at 6:34pm

trig
Find the numerical value of cos(60degree) + cot(30degree): (A) 1/2 (B) 3p3/2 (C) 12 +p3 (D) 52p3 (E) None of the above.
Saturday, May 7, 2011 at 6:33pm

trig
A tree casts a shadow 50 yards long when the angle of the sun (measured from the horizon) is 30 degree. How tall is the tree in feet? (A) 150p3 (B) 50p3 (C) 150 (D) 75p3 (E) None of the above.
Saturday, May 7, 2011 at 6:31pm

trig
The hypotenuse of a right triangle has length 8 and one of the other edges has length 3. What is the sine of the angle opposite the edge of length 3? (A) 3/p55 (B) 3/8 (C)p55/8 (D) 55/64 (E) None of the above.
Saturday, May 7, 2011 at 5:16pm

trig
Determine the value of cos(theta) given that cos(pi − theta) = .2 (A) p.96 (B) .2 (C) −.2 (D) −p.96 (E) None of the above.
Saturday, May 7, 2011 at 5:15pm

trig
Find the sum of all of the solutions to the equation cos(2x) − sin2(x) − 1 = 0 in theinterval 0 < x < 5 pi. (Use radian measure for x.) (A) 15pi (B) 0 (C) pi (D) 10pi (E) None of the above.
Saturday, May 7, 2011 at 5:12pm

trig
2. A circle has a radius of 10 centimeters. Find the length, in centimeters, of the arc intercepted by a central angle of 100 degree. (A) 50pi/9 (B) 100pi/9 (C) 500pi/9 (D) 18pi/5 (E) None of the above.
Saturday, May 7, 2011 at 5:10pm

trig
express the trig. ratios sinA,secA n tanA in terms of cotA.
Saturday, May 7, 2011 at 5:49am

trig
ABC is rightangled triangle. AD is the bisector of angle BAC. Angle DAC=15 degrees. X=CD. Find X. I know the answer is 7.1 but do not know how to do the actual sum. Can you please help AB = 23 CM
Thursday, May 5, 2011 at 5:50pm

trig
ABC is rightangled triangle. AD is the bisector of angle BAC. Angle DAC=15 degrees. X=CD. Find X. I know the answer is 7.1 but do not know how to do the actual sum. Can you please help.
Thursday, May 5, 2011 at 5:00pm

trig
(1/m)= (m-34)/(2m^2)
Thursday, May 5, 2011 at 10:28am

trig
angle a is acute and sin = u. find the other five trigonometric functions in the terms of u.
Wednesday, May 4, 2011 at 8:21pm

trig confused.. pls help
A group of mountain climbers are using trigonometry to find the height of a mountain located in the Rockies. From point A, which is due west of the mountain, the angle of elevation to the top is 56 degrees. From point B, which is due east of the mountain, the angle of ...
Tuesday, May 3, 2011 at 9:55pm

trig
solve for exact value for x between 0 and 2 pie 3sin2(x)-cos2=2?
Tuesday, May 3, 2011 at 12:59pm

trig pls.. help me
A rocket carrying a weather satellite is launched. As it moves through space, the rocket is tracked by two tracking stations located 24 km. apart, beneath the rocket. The 2 tracking stations both lie west of the launching pad. at a specific moment, the rocket's angle of ...
Monday, May 2, 2011 at 4:03pm

trig
how do you solve 2nd cos 6/11 (my calculator doesn't have 2nd function0
Sunday, May 1, 2011 at 8:31pm

trig
the terminal side of angle theta in standard position lies on the line that travels through point (9,1), find sin of theta, cos of theta, tan of theta. (give exact values)
Sunday, May 1, 2011 at 1:43pm

Trig
Water is being pumped at a 3 cubic feet/minute into a cylindrical storage tank with a circular base of a radius 4 feet. Find the depth of the water (d) as a fucntion of time (t)
Friday, April 29, 2011 at 11:36am

Trig
A silo is 40 feet high and 16 feet across. find the angle of depression from the top edge to floor. How do you solve this?
Thursday, April 28, 2011 at 10:26pm

Trig
A silo is 40 feet high and 16 feet across. find the angle of depression from the top edge to floor. How do you solve this?
Thursday, April 28, 2011 at 10:11pm

Trig
What is the period of f(x)= 1/2 tan(3x+pi/2) and -2/3 cos(x/3-1/2)?
Thursday, April 28, 2011 at 10:01pm

Trig
What is the vertical asymptote of y=tan(x-pi/3)?
Thursday, April 28, 2011 at 9:33pm

Trig
If two runners determine the angle of elevation of a hot air ballon is 24.5 degrees and 22 degrees. The hot air ballon is 1500 feet directily above a point on the highway east of both runners. How far apart are they? A trigonometry question.
Thursday, April 28, 2011 at 8:39pm

trig
Verify the equation is an identitiy: cot(x)tan(x+pi) - sin(pi-x)cos((pi/2)-x) = cos^2x Thanks
Wednesday, April 27, 2011 at 8:28pm

trig
A coil of wire rotating in a magnetic field induces a coltage E=20sin((PIa/4) - (PI/2)). Use an identity to express this in terms of cos(PIa/4). Types of Identities: Double Angle, Half Angle, Sum and Difference of Sine, Cosine, and Tangent, Pythagorean, Reciprocal, Quotient. ...
Wednesday, April 27, 2011 at 8:23pm

identities trig?
find all solutions to the equation in the interval [0,2pie] cos2x=cosx
Tuesday, April 26, 2011 at 9:47pm

ah trig help
use an apropriate sum or difference indentity to prove the double-angle identity cos2u=1-2sin2u
Tuesday, April 26, 2011 at 9:39pm

trig
use a sum or difference identity to find an exact value cos pie/12
Tuesday, April 26, 2011 at 9:35pm

trig identies 5.3 &5.4
use a sum or difference identity to find an exact value pie/12
Tuesday, April 26, 2011 at 9:31pm

trig identities
cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees. write the expression as the sine, cosine, or tangent of an angle.
Tuesday, April 26, 2011 at 9:22pm

math
4cot^2x-4/tanx+cosxsecx factorin algenraic single trig function
Tuesday, April 26, 2011 at 5:34pm

trig
how do i solve this completing the square problem: 3x^2+12x+10=0
Tuesday, April 26, 2011 at 2:54pm

trig
The lengths of 2 adjacent sides of a parallelogram are 42 cm and 36cm. an angle of the parallelogram is 4o degrees. Find the measure of the longest diagonal to the nearest tenth of a centimeter.
Tuesday, April 26, 2011 at 2:07pm

trig.
Find the degree measures of 2 angles, one positive and one negative that are co-terminal with 135.
Tuesday, April 26, 2011 at 2:05pm

trig
Each child in a family of 3 children is going to get a pet. One wants a dog or cat, another wants a bird or rabbit, and the third wants a frog or snake. List a sample space or draw a tree diagram and determine the number of possible outcomes.
Tuesday, April 26, 2011 at 2:04pm

trig
finding the period of a graph given a equation y=-5sin1/3(x-pi/2)
Tuesday, April 26, 2011 at 1:49pm

Trig
a clock has a diameter of 1 foot what is the angular size if viewed from a distance of 27 feet
Tuesday, April 26, 2011 at 1:04pm

algebra 2 and trig (math)
Find the value of x in the interval 0 is less than or equal to x and 360 is greater than or equal to x which satisfies the equation cos x - 2 cos x sin x.
Tuesday, April 26, 2011 at 12:09am

algebra 2 and trig (math)
Find the positive acute angle that satisfies the equation tan(squared) minus tan = 0.
Monday, April 25, 2011 at 11:49pm

trig
What is the shortest possible length of a triangle side facing an angle of 20 degrees, if one of the other sides is 5? (answer should be a decimal number, correct within 0.001)
Monday, April 25, 2011 at 7:07pm

trig
given a central angle of 66 degrees find the area of a sector in a circle of radius 12.1 inches
Monday, April 25, 2011 at 3:27pm

trig
what is angular velocity if 57 revolutions are completed in 8 minutes?
Monday, April 25, 2011 at 3:26pm

trig
find, to the nearest tenth of a meter, the length of the arc intercepted by a central angle of 160 degrees if a radius of the circle in 8 meters long
Sunday, April 24, 2011 at 10:13pm

trig
find, to the nearest tenth of an inch, the length of the arc intercepted by a central angle of (4pi)/3 radians if a radius of the circle is 22 inches long
Sunday, April 24, 2011 at 10:11pm

trig
I need help with this problem: If San Francisco Giants homerun king, Barry Bonds, hit a baseball due west with a speed of 50.0 m/s, and the ball encountered a wind that blew it north at 5.00 m/s, what was the resultant velocity of the baseball?
Saturday, April 23, 2011 at 6:03pm

trig
an angle 30 with the distace of 24km and an angle of elevation of 45 with the distance of 15km.
Saturday, April 23, 2011 at 6:48am

Math calculus-Trig
Find the area bounded by the curve and the lines y = -x^2 - 4x; y = 1; x = -3; x = 1
Thursday, April 21, 2011 at 6:16pm

Calculus/ trig
Find the area bounded by the curve and the lines y=sinx, y= 1/2, x=5pi/6 and x=pi/6
Thursday, April 21, 2011 at 5:17pm

trig
write each equation in its equivalent logarithmic form 8 7=300
Wednesday, April 20, 2011 at 8:15am

trig
sin^-1(sin5pi/6)
Tuesday, April 19, 2011 at 8:18pm

trigonometry
simplify sin7x-sin3x as a product of trig functions.
Tuesday, April 19, 2011 at 8:16pm

trig
convert the point with polar coordinates (2,7pi/6) into rectangular coordinates.
Tuesday, April 19, 2011 at 8:13pm

trig
The parametric equations for a curve in the x-y plane are x=2+t^2 and y=4-3t. Determine the points where the curve intersects the x-axis.
Tuesday, April 19, 2011 at 8:12pm

trig
simplify the expression: sin(theta+pi/4) + sin(theta-pi/4)
Tuesday, April 19, 2011 at 8:08pm

trig
angle x lies in quadrant 3 and cos(x)=-.6. Find cos(3pi/2-x)
Tuesday, April 19, 2011 at 1:33pm

trig
simplify the expression sin(theta+pi/4) + sin(theta-pi/4)
Monday, April 18, 2011 at 10:15pm

Algebra2/ Trig
During a baseball season, a company pledges a donation to a charity of $5000 plus $100 for every home run hit by the local team. Does it make more sense to represent this situation using a sequence or a series? Explain your reasoning.
Monday, April 18, 2011 at 2:20pm

trig
what is the cube root of (-64i)?
Sunday, April 17, 2011 at 5:54pm

trig
What is the trigonometric notation for 3-3(sqrt3i)?
Sunday, April 17, 2011 at 1:14pm

trig
Multiply: 5(cos Pi/3 + i sin Pi/3)times 2 (cos Pi/4 + i sin Pi/4) and leave the answer in trigonometric notation.
Sunday, April 17, 2011 at 12:56pm

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