Friday

May 29, 2015

May 29, 2015

**trig**

How can I find the exact value of 4cos(7ð/4)-2sin(ð/3)?
*Tuesday, January 31, 2012 at 10:05pm*

**trig**

how can we find the value of sin -720
*Tuesday, January 31, 2012 at 9:06pm*

**alg2\trig**

a colony of 300 bacteria doubles each day. write an explicit formula to determine how many bacteria there would be on the nth day. how would you do this?
*Tuesday, January 31, 2012 at 8:09pm*

**trig**

The terminal side of θ lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of θ by finding a point on the line. Line: (55/48)x Quadrant:III sin(θ)= cos(θ)= tan(θ)= csc(θ)= sec(θ)= cot(θ)=
*Tuesday, January 31, 2012 at 7:06pm*

**trig and algerba**

6+7(t - 1) = 5(t + 7) + 8 what does t equal
*Tuesday, January 31, 2012 at 5:18pm*

**trig**

If A=55 degrees 55 minutes and c=16, find a.
*Tuesday, January 31, 2012 at 3:06pm*

**trig**

Prove (1+secx)/(tanx+sinx)=cscx
*Tuesday, January 31, 2012 at 1:38pm*

**trig**

Find the indicated trigonometric function, given that è is an angle in standard position with the terminal side passing through the given point. 2) (15, 20); Find csc è. A) 5/3 B) 3/4 C) 5/4 D) 4/3
*Tuesday, January 31, 2012 at 12:07pm*

**Trig**

Solve the following trig equation 2cos(x-π/6)=1
*Tuesday, January 31, 2012 at 2:51am*

**Trig**

Prove (1+secx)/(tanx+sinx)=cscx
*Tuesday, January 31, 2012 at 2:28am*

**Trig**

Solve 5^2x -4(5^x)=12
*Monday, January 30, 2012 at 7:45pm*

**Trig**

Solve Log[8](log[5]x)=0
*Monday, January 30, 2012 at 6:52pm*

**Trig **

Write the following in terms of sin(θ) and cos(θ); then simplify if possible. csc(θ) - cot(θ)cos(θ) =
*Monday, January 30, 2012 at 1:10pm*

**alg2\trig**

if a3= 17 & a8=37 are terms in annarithmetic sequece, fina a1 & d. the answer is a1=9 & d=4 but i dont understand how they got the answer, please help!
*Sunday, January 29, 2012 at 9:10pm*

**trig**

sin2x=cos3x then sinx=?(if 0<x<pi/2)
*Sunday, January 29, 2012 at 9:31am*

**trig**

Find sec^2 x (4 tan^2 x-3)
*Saturday, January 28, 2012 at 4:16pm*

**Trig**

Sketch a unit circle and label the terminal points corresponding to t= pi/4, 3pi/4, 5pi/4, 7pi/4. Include the coordinates of each point. I have 3 other problems like this and i have no clue how to do them. can someone help please?
*Saturday, January 28, 2012 at 2:00pm*

**trig**

if x is an acute angle and sinx= cosx then find the value of x?
*Saturday, January 28, 2012 at 1:24am*

**Precalculus**

Consider the equation 7sin^2x - (4sin2^x)/cosx = -1 a) Put the equation in standard quadratic trig equation form. Why is it 7sin^2x - 8sinx + 1 =0?
*Friday, January 27, 2012 at 8:21pm*

**trig**

What is cos(11pi/3)? Explain your thinking. What is sin(13pi/4) ? Explain your thinking.
*Friday, January 27, 2012 at 6:39pm*

**trig**

Sketch a unit circle and label the terminal points corresponding to t= pi/4, 3pi/4, 5pi/4, 7pi/4. Include the coordinates of each point
*Friday, January 27, 2012 at 6:37pm*

**trig**

What are the coordinates of the terminal point determined by t=7pi/6 ?
*Friday, January 27, 2012 at 6:35pm*

**Trig**

tan(θ) = a (a ≠ 0), find cot(θ).
*Friday, January 27, 2012 at 6:12pm*

**TRIG **

Find the remaining trigonometric ratios of θ if sin(θ) is given and θ QI sin(θ)=7/sqrt 149 cos= tan= cot= csc= sec=
*Friday, January 27, 2012 at 5:19pm*

**trig**

how to do root3 value
*Friday, January 27, 2012 at 11:00am*

**trig**

Graph f(x)= second(2x+3.14/4)
*Friday, January 27, 2012 at 10:41am*

**trig**

Determine if the value of each trig function is positive, negative, zero, or undefined. a) tan 310 degrees b) cos 7pi/6 c) sin -245 degrees d) sec( -7/2)
*Thursday, January 26, 2012 at 11:14pm*

**trig**

Find the length of the circular arc intercepted by a central angle of 20 degrees in a circle or radius 5cm
*Thursday, January 26, 2012 at 10:46pm*

**trig**

Find the reference angle for each given angle: a) 325 degrees b) 14pi/3 c) -190 degrees
*Thursday, January 26, 2012 at 10:21pm*

**trig**

If point G(a,b) lies on the terminal side of angle theta in standard position, what is the value of sin(theta) if point G also lies on the unit circle?
*Thursday, January 26, 2012 at 10:14pm*

**trig**

If point (3, -8) lies on the terminal side of an angle A in standard position, find: a) sinA b) tanA
*Thursday, January 26, 2012 at 10:09pm*

**trig**

If the point (-3,0) lies on the terminal side of angle theta in standard position find: a) csc theta b) cot theta
*Thursday, January 26, 2012 at 10:08pm*

**trig**

The second hand on a clock is 8 inches long. If the second hand travels a distance of 10pi inches, what is the positive radian measure of the angle that the second hand travels through?
*Thursday, January 26, 2012 at 9:52pm*

**trig**

Are 22pi/5 and 100 degrees coterminal? explain.
*Thursday, January 26, 2012 at 9:47pm*

**trig**

Find the exact value. Without using a calculator a) cos (-17pi/6) b) sec (3pi/2)
*Thursday, January 26, 2012 at 9:46pm*

**trig**

If theta is the measure of an angle in standard position with the given conditions, find the quadrant(s) in which the terminal side of theta lies. a) cot theta < 0 b) cos theta > 0 , csc theta < 0
*Thursday, January 26, 2012 at 9:42pm*

**trig**

Use a ratio identity to find tan(θ) if given the following. sin=6/sq rt 37 and cos 1/sq rt 37
*Thursday, January 26, 2012 at 12:31am*

**trig**

Find the remaining trigonometric ratios of θ if sin(θ) = -1/6 and θ is not in QIII cos tan cot csc sec
*Thursday, January 26, 2012 at 12:29am*

**trig**

Give the reciprocal of the following. 7/15
*Thursday, January 26, 2012 at 12:28am*

**trig**

If sin(θ) = 8/17 and θ terminates in QI, find cos(θ)
*Thursday, January 26, 2012 at 12:28am*

**trig**

find two values of theta, zero degrees is than or equal to theta which is less than 360 degrees, that satisfy the given trigonometric equation. tan theta equals radical 3.
*Wednesday, January 25, 2012 at 11:49pm*

**trig**

Find y if the point (7, y) is on the terminal side of θ and cos(θ) = 7/25
*Wednesday, January 25, 2012 at 10:37pm*

**trig**

a. A sector that has been cut out of circular plastic sheet which has a circumference of 12.31 m. If the central angle of the sector is 1/4 of a revolution, find the area of the sector.
*Wednesday, January 25, 2012 at 2:03pm*

**trig**

What is the fundamental period of the function f(x)=4/9sinx
*Wednesday, January 25, 2012 at 12:31pm*

**trig**

Find the length of side b to the nearest whole number if side a=105,angle A=65 degrees and angle B=37 degrees?
*Wednesday, January 25, 2012 at 12:12pm*

**trig**

how to find out maxima of function 3acos3theta
*Wednesday, January 25, 2012 at 1:55am*

**trig**

not sure how to simplify tan(t+pi)/sin(t+2pi)
*Tuesday, January 24, 2012 at 11:33pm*

**trig**

city A is 300 miles directly north of city B assuming the earth to be sphere of radius 4000 miles determine the difference in latitude in degrees of the two cities
*Tuesday, January 24, 2012 at 9:30pm*

**Trig**

If a plane takes off on runway 31 (N 31o W) and flies 4 miles, then makes a right (90o) turn and flies 11 miles, what bearing will the traffic controller use to locate the plane?
*Tuesday, January 24, 2012 at 9:08pm*

**trig**

If the line OP of radius and(x,y) is rotated through a certain angle about the oringin
*Tuesday, January 24, 2012 at 1:48pm*

**alg2/trig**

what is the smallest value of k that would make the roots of the equation x^2-2x-k imaginary? please help, no idea how to do this.
*Monday, January 23, 2012 at 9:29pm*

**trig**

tan-5n over 3
*Monday, January 23, 2012 at 8:16pm*

**TRIG HELP ASAP**

I need help trying to find the major and minor axis on this problem: x^2+3y^2-6x+24y+6=0
*Monday, January 23, 2012 at 7:41pm*

**trig**

How do you decide if csc=74 is greater than or less than cos=74 without using a calculator?
*Monday, January 23, 2012 at 1:08am*

**Trigonometry**

What are these things called: -cos x = cos -x What are the rules to these trig rules? Thanks
*Sunday, January 22, 2012 at 11:29pm*

**trig**

4cos^2 theta = 3 where 0 degrees < theta< 360
*Sunday, January 22, 2012 at 10:01pm*

**alg2/trig**

1)3x^2-12x-21 solve by completing the square in simplest radical form 2) (1/x+3)-(2/3-x)=(4/x^2-9)find values of x 3)3/radical(3a^2b^4) is equivalent to 4) factor completely 27x^-75x^4
*Sunday, January 22, 2012 at 7:57pm*

**trig**

Please explain to me how to get this -- what quadrant tan theta < 0, sin theta < 0 is in.
*Saturday, January 21, 2012 at 7:06pm*

**Trig**

what quadrant is this in and please explain... sin theta < 0, cos theta > 0
*Saturday, January 21, 2012 at 6:51pm*

**trig**

5pi/7 what quadrant is it in???
*Saturday, January 21, 2012 at 6:07pm*

**Trig**

Find the speed in both radians per second and degrees per second for the hour hand, the minute hand, and the second hand on a clock.
*Saturday, January 21, 2012 at 3:49pm*

**algebra 2 trig**

express the product of (2/3x^2-1/2x) and (12x+4/5) as a trinomial
*Saturday, January 21, 2012 at 2:16pm*

**trig**

How to get 5degree without using calculator using identities?
*Friday, January 20, 2012 at 10:20pm*

**trig**

if you are riding on a ferris wheel that is 60 ft tall and it takes you 5 minutes to make 1 revolution, what is your linear velocity?
*Friday, January 20, 2012 at 10:20am*

**Math**

Would someone verify these answers. 1. A person waves his hand back and forth, where their finger tips move past the starting position 4 cm in each direction. If he waves 20 times every 15s, what sine equation models the movement of the hand if the hand starts in the upright ...
*Thursday, January 19, 2012 at 3:36pm*

**trig**

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x)= secx i(x)= cscx
*Thursday, January 19, 2012 at 8:45am*

**trig**

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x0= secx i(x)= cscx
*Thursday, January 19, 2012 at 8:45am*

**trig**

If theta =( -7pi )/( 3) , then sec(theta) equals...?
*Tuesday, January 17, 2012 at 5:27pm*

**trig**

How do I get exact measures? cosine 270 degrees sin 90 degrees tan 360 degrees csc 45 degrees no calculator!
*Monday, January 16, 2012 at 7:11pm*

**trig**

how do I find this without a calculator? sin 90 degrees?
*Monday, January 16, 2012 at 3:44pm*

**geom/trig**

Using scissors to cut a rectangular piece of paper from one corner ro the opposite corner. The cut is 36 cm long and makes a 34 degree angle to the uncut edge. How many cm long is the paper (from the corner where he started the cut?
*Monday, January 16, 2012 at 2:05pm*

**trig**

I have a couple of these and cannot locate directions I can understand-please help! Draw the graph of y=3cos(2x) for 0< or= x < or = 2 pi
*Monday, January 16, 2012 at 1:20pm*

**Trig**

(x+3)^2/4^2 + (y-2)^2/5^2 The location of the Foci are at: a.(-3,-1) and (-3,-5) b. (-3,2) and (-3,5) c. (-3,-3) and (-3,7) d. (-3,1) and (-3,-5) I get (-3,2) and (-3,5) Am I correct?
*Saturday, January 14, 2012 at 2:08pm*

**trig**

From the top of a hill 700 ft. high, an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two markerstones.
*Saturday, January 14, 2012 at 5:27am*

**Trig-Please check**

What are polar coordinates of (4,6) 1.Round r to nearest hundredth and theta to nearest hundredth of RADIAN My work: r^2 = x^ + y^2 r^2 = 4^2 + 6^2 r^2= 16 +36 r^ =52 r=7.21 I'm stuck on how to do theta in Radians, could you please assist
*Friday, January 13, 2012 at 11:20am*

**trig**

3x^2+16y^2=48 conic sections
*Friday, January 13, 2012 at 2:05am*

**trig**

I need help finding derivatives and antiderivatives. Given: f(x),find f'(x) 1. f(x)-2x^6 2. f(x)= -3x +7 3. f(x)= 3x^2 - 5x 4.f(x)= 1/2x^2 - x + 4
*Thursday, January 12, 2012 at 4:05pm*

**Trig**

IfA=340°, prove that 2cosA/2 = -(v1+sinA) - (v1-sinA)
*Thursday, January 12, 2012 at 5:12am*

**trig**

evaluate sin (11pi/6) to the nearest thousandth.
*Wednesday, January 11, 2012 at 11:49pm*

**trig**

write sec theta in terms of sin theta when theta lies in quadrant III
*Wednesday, January 11, 2012 at 11:43pm*

**trig**

what is the amplitude of y=2+cos(-1/2 theta)?
*Tuesday, January 10, 2012 at 8:22am*

**Trig**

The question is: Set up a 2 column proof to show that each of the equations is an identity. Transform the left side to become the right side. a. (tan + cot)^2 = sec^2 + csc^2 I'm having trouble with this. b. (cos + sin)/cos + (cos - sin)/sin = csc sec I'm having ...
*Sunday, January 8, 2012 at 9:48pm*

**Trig**

(sin/cos)/ ( 1/cos - 1) = I'm stumped
*Sunday, January 8, 2012 at 7:49pm*

**Trig**

Proving Identities: 2 columns (tan + cot)^2 = sec^2 + csc^2 I'm having trouble breaking down the left side to = the right side.. Any help please
*Sunday, January 8, 2012 at 7:38pm*

**trig**

how do you work find sin (a-B)beta sign. sin a = 12/13,a lies in quadrant II,and cos B = 15/17, B lies in quadrant I.
*Sunday, January 8, 2012 at 6:45pm*

**trig**

solve for x in the following equations: 1) sin(arcsin x) = 1 2) 2arcsin x = 1 3) cos(arccos x) = 1/3
*Sunday, January 8, 2012 at 10:34am*

**Trig**

the horizontal speed of an airplane is 183mph. the magnitude of the plane's velocity is 200mph. write an expression describing the angle the angle the plane is climbing my solution: cos-1 183/200 is this right
*Sunday, January 8, 2012 at 6:32am*

**trig**

express 4/5-radical 13
*Thursday, January 5, 2012 at 8:59pm*

**trig**

express 4/5-ã13 plz
*Thursday, January 5, 2012 at 8:58pm*

**trig**

express 4/5-ã13 plz
*Thursday, January 5, 2012 at 8:57pm*

**Trig**

the center of a circle x^2 + y^2 + 8y =1 is a. (0,-2) b. (0,4) c. (0,1) d. (0,-4) I believe the answer is (0,4) Am I correct ?
*Wednesday, January 4, 2012 at 10:34pm*

**Trig**

The center of the circle (x+2)^2 + (y-3)^2 =1 is a. (2,3) b. (-2,3) c. (2,-3) d. (-2,-3) I believe b. is the answer, is that correct?
*Wednesday, January 4, 2012 at 10:13pm*

**Trig**

The radius of: (x+2)^2 + (y-3)^2 =9 is 3 is this correct?
*Wednesday, January 4, 2012 at 10:04pm*

**Trig**

If the center of a circle is at (2,2) with a radius of 4 the equation of the graph would be : a) (x-2)^2 + (y-2)^2 = 16 b) (x+2)^2 + (y+2)^2 = 16 I think it would be b is that correct?
*Wednesday, January 4, 2012 at 10:02pm*

**trig**

A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will it take her to go ...
*Wednesday, January 4, 2012 at 8:20am*

**trig**

prove that tan^2x+ sec^2x =1
*Tuesday, January 3, 2012 at 3:58pm*

**Trig**

Prove that 1 + tanAtanA/2 = tanAcotA/2 -1 = secA
*Tuesday, January 3, 2012 at 9:40am*

**Trig**

Half Angle Identities cosx = 7/25 greater than 270 deg and less than 360 Determine cos 1/2x a. -7rt2/10 b. 7rt2/5 c.7/25 d.-4/5 I get 7rt2/5 Is this correct??
*Monday, January 2, 2012 at 8:04pm*

**Trig**

sinAsin2A+sin3Asin6A+sin4Asin13A/sinAcos2A+sin3Acos6A+sin4Acos13A = tan9A
*Monday, January 2, 2012 at 10:54am*

**Trig**

Half angle identities Find exact values of a) cos 1/2 b) sin 1/2 c) tan 1/2 based on: cos = 1/5 greater than 270 deg less than 360 deg. I get a) - rt 3/5 b) rt24/5 and c) does not work out at all .... Help please.. book says for answers a)-rt15/5 b) rt10/5 c) -rt6/3 How do you...
*Sunday, January 1, 2012 at 6:16pm*