Wednesday

November 25, 2015
**Trig**

what is the amplitude, period, phase shift, and vertical shift of each equation? 1. y= A cos(B(x-3))+4 2. y=-2sin(2piX/3) 3. y=4cos(3pi(x+3)) 4. y= -3cos(2(x-pi/4))+0.4 thank you so much!
*Thursday, February 16, 2012 by BreAnne*

**trig**

Describe the possible values of variable a such that (/72) + (/a) can be simplified to a single term. Note: (/a) is the square root of a.
*Wednesday, February 15, 2012 by cheyanne*

**trig**

Prove 1+cos X/1-cos X = (csc X + cot X)squared
*Wednesday, February 15, 2012 by Emmie*

**Algebra-Trig Please Help ASAP**

A balloon isin the vertical plane of two consecutive milestones of a road. The angles of depression of the stones as viewed from the balloon are 15 degrees and 17 degrees. Find the height of the balloon if (a) the stones are on opposite sides of the balloon, (b) the stones are...
*Wednesday, February 15, 2012 by Candy*

**trig**

cos^4 15-sin^4 15 with out using calculator
*Wednesday, February 15, 2012 by mohamed sedeeq*

**trig**

If cosecant of theta equals 3 and cosine of theta is less than zero, find sine of theta, cosine of theta, tangent of theta, cotangent of theta and secant of theta
*Wednesday, February 15, 2012 by Ana *

**trig**

from an observer tower, a ff.above the level of a river,the angle of depression of a point on the near shore is theta and that of a point directly beyond on the far shore is FI. show that the width of the river is a (cotan theta=p+q/r)
*Wednesday, February 15, 2012 by Anonymous*

**trig**

right triangle has an acute angle of 24.8 and an adjacent length of 145 what is the side opposite of the acute angle
*Tuesday, February 14, 2012 by lo*

**trig**

refer to right triangle ABC with C = 90degrees. Given a= 2 and b=√5 Find the six trigonometric functions of A. and find the angles A and B
*Monday, February 13, 2012 by Mari*

**Math [Trig]**

how do you find a full cycle of a trigonemtric function?
*Monday, February 13, 2012 by Cody*

**trig**

CSC(theta)=1.92 Find Theta. Now I know CSC = 1/sin but no matter how I enter it into my cal I get an error.
*Monday, February 13, 2012 by Zero*

**Algebra/Trig Check Answers please **

Please check these answers thanks. 1. The shadow of a vertical pole is 24.8 feet long when the angle of elevation of the sun is 42degrees 0.0'. Find the height of the pole. Answer: 22.3=height 2. From a point on a lighthouse 108 feet above water, the angle of depression of...
*Saturday, February 11, 2012 by Missy*

**Algebra/Trig Check Answers please **

Can you please check these answers thanks 1. A ladder 14 feet long is leaning against a house. The foot of the ladder is 4.8 feet from the house. Find the angle of elevation of the ladder and the height it reaches on the house. Answer: 13.2=height 18.9 =angle of elevation 2. ...
*Saturday, February 11, 2012 by Missy*

**Math/trig**

Log radical b/ a^2 is equivalent to 1) 1/2 log b + 1/2 log a 2) l/2 log b- 2 log a 3) 2 log b - 1/2 log a 4) 1/2logb/2 log a
*Saturday, February 11, 2012 by matthew*

**Math/Trig**

Which logarithmic equation is equivalent to L^m = E 1) LogL E = m 2) logE L = m 3) logm E= L 4) logE m= L
*Saturday, February 11, 2012 by Charles*

**trig**

The hypotenuse of the right triangle PQR is 16ft. length. The sine of the angle <P is 3/5. How many feet long is the line if QR?
*Saturday, February 11, 2012 by Aailayah*

**trig**

If theta is an angle in standard position, state in what quadrants its terminal side can lie if theta is equal to -415 degrees?
*Friday, February 10, 2012 by Rick*

**TRIG**

In a right triangle ABC, C = 90°, b = 380.1 inches and c = 589.1 inches. Solve for all the missing parts using the given information. (Round each answer to one decimal place for side and to two decimal places for angles.) A = ° B = ° a = inches IM lOST!
*Friday, February 10, 2012 by Anonymous*

**trig**

I dont understand this. can you please tell how you got each answer? describe how the graph of each function is related to a basic trigonometric graph. 1. y= 1/2cos x 2. y= 2cos x+1 3. y= sin x-4 4. y= sin(x-4) 5. y= sin(3x) 6. y= cos(1/2x) 7. y= -cos x 8. y= -cos x+2 9. y= -...
*Friday, February 10, 2012 by BreAnne*

**trig**

if diameter of the circle is 100 cm. and length of the arc forming the angle is 360 cm. Assume that the earth is a perfect sphere of diameter 8000 miles. Find the distance between: Rome, Italy: latitude 42 degrees north Copenhagen, Denmark: latitude 54.3 degrees north
*Wednesday, February 8, 2012 by sara*

**trig**

Find sin t,cos t and tan t when the terminal side of an angle of t radians passes through ( -3/5 , -4/5) on the unit circle.
*Wednesday, February 8, 2012 by emily*

**trig**

Find sin t ,cos t and tan t when the terminal side of an angle of t radians passes through (2 , 7)
*Wednesday, February 8, 2012 by Nora*

**trig**

Find sin t ,cos t and tan t when the terminal side of an angle of t radians passes through (2 , 7)
*Wednesday, February 8, 2012 by Nora*

**trig**

Given theta is in the standard position and is in the first quadrant , if the terminal side of the angle theta is parallel to the line y=x+4 on ,find the measure of theta in degrees.
*Wednesday, February 8, 2012 by Nora*

**trig**

Given theta is in the standard position and is in the first quadrant , if the terminal side of the angle theta is parallel to the line on ,find the measure of theta in degrees.
*Wednesday, February 8, 2012 by Stacy*

**trig**

Solve the equation 2 tan C - 3 = 3 tan C-4 algebraically for all values of C in the interval 0 degrees <_ C < 360 degrees
*Wednesday, February 8, 2012 by Anonymous*

**trig**

If the value of sin theta =12/13 then find the value of 1-cos theta/1+cos theta.
*Wednesday, February 8, 2012 by Animesh*

**Trig**

If sin(t)=4/5 & 0<t<pi/2, find the following: a)sin t(-t) b) sin(t-2pi) c)cos t d)cos(pi-t)
*Wednesday, February 8, 2012 by Purplechick4*

**Trig**

if tan(x)=9/4, find cos(x) if pi<x<3pi/2
*Wednesday, February 8, 2012 by Purplechick4*

**Trig**

Help please! Thank you! If csc(theta)= -2 and theta lies in Quadrant III, find tan(theta).
*Tuesday, February 7, 2012 by Mandy*

**trig**

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)
*Monday, February 6, 2012 by Laura*

**TRIG HELP ASAP**

I really need help on this problem. A sector has area of 15 in^2 and central angle of 0.2 radians. Find the radius of the circle and arc length of the sector
*Monday, February 6, 2012 by missy*

**Geometry/trig**

A plane is flying due south at a speed of 300 mph. The wind is blowing from the west at a speed of 40 mph. Find the resultant speed of the plane and the direction of the plane
*Monday, February 6, 2012 by Lezah*

**trig**

tan theta= square root of 3 / 3 if o degrees is less than or equal to theta less than o equal to 360
*Monday, February 6, 2012 by Dillon*

**Calculus**

Integrate [1/square root of(e^(2x)-1)]. I have to use u substitution. We are doing the integrals of inverse trig functions, but I cannot get it to work out!
*Sunday, February 5, 2012 by Elaine*

**trig**

A race driver has a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 5.5 m/s^2; after 3.6 s he enters the main speedway. At the same instant, another car on the speedway and traveling at a constant ...
*Sunday, February 5, 2012 by Anonymous*

**trig**

If tan theta = sin theta, and theta is greater than or equal to 0 and less than or equal to 2 pi. find cos theta and what is theta
*Saturday, February 4, 2012 by Anonymous*

**trig**

What is the domain, range, and period of y= sin x + 1 What is the domain, range, and period of y= -cos x Can someone please help?
*Friday, February 3, 2012 by BreAnne*

**Trig**

can you please simplify these in faction form? (pi/3) +1=? (2pi/3) +1=? (3pi/4) +1=? (5pi/4) +1=? (5pi/3) +1=? thank you so much!
*Friday, February 3, 2012 by BreAnne*

**Trig**

a. What is the length of the hypotenuse of triangle ABC? b. What is the length of the shorter leg of triangle ABC? c. What is the length of the longer leg of triangle ABC? angle A=60, angle B=30, angle C=90 the triangle has a height of 10
*Friday, February 3, 2012 by BreAnne*

**trig**

use the discriminant to solve for the smallest value of b that would make the roots of the equation x^2+bx+5=o imaginary
*Thursday, February 2, 2012 by jessica*

**trig**

what is the correct answer in trigonometric identities. DiViDE ; x^5 + 5x^4 - 2x^3 + 3x^2 + 2x + 1 by x + 3
*Thursday, February 2, 2012 by mien*

**trig**

what is the correct answer in proving trigonometric identities if tan theta / sin theta = sec theta
*Thursday, February 2, 2012 by mien*

**trig**

what is the correct answer in proving trigonometric identities if tan theta/sin theta = sec theta
*Thursday, February 2, 2012 by mien*

**trig**

what is the correct answer in proving trigonometric identities if tan theta cos^2 theta + cos^2 theta
*Thursday, February 2, 2012 by mien*

**Trig**

Its a 30-60-90 triangle there's a line in the center that= 10 a. What is the length of the hypotenuse of triangle ABC? b. What is the length of the shorter leg of triangle ABC? c. What is the length of the longer leg of triangle ABC?
*Wednesday, February 1, 2012 by BreAnne*

**Trig**

angle b=25 degrees, angle c=90 AB= 25 a. Find the length of side b to two decimal places. b. Find the length of side a to two decimal places in three different ways.
*Wednesday, February 1, 2012 by BreAnne*

**Trig **

Sarah used her calculator to find sin125 degrees . She wrote down sin125 degrees = -.57. How could Sarah recognize that her answer is incorrect?
*Wednesday, February 1, 2012 by BreAnne*

**trig**

a grocery store display consists of cases of soda. there are 15 cases at the base, and 1 case at the top. if there are 15 rows, how many cases are needed for the entire display? a) 180 b)30 c)130 d)15
*Wednesday, February 1, 2012 by jessica*

**trig**

What is the length of the circular arc intercepted by a central angle of 20degrees in a circle with a radius of 5cm?
*Wednesday, February 1, 2012 by Anonymous*

**trig**

What does sin(squared)t + cot(squared)tsin(squared)t equal? and can someone explain it?
*Wednesday, February 1, 2012 by Anonymous*

**alg2/trig**

starting salary for a job is $30,000 with a guaranteed raise of $5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. please somone help!
*Wednesday, February 1, 2012 by lisa *

**trig**

The angle of elevation to the top of a very tall Building is found to be 15° from the ground at a distance of 1 mi from the base of the building. Using this information, find the height of the building
*Wednesday, February 1, 2012 by Anonymous*

**Math-trig**

A Ferris wheel with a diameter of 100 feet rotates at a constant rate of 4 revolutions per minute. Let the center of the Ferris wheel be at the origin. The height h (in feet) of a Ferris wheel car located at the point (x, y) is given by h = 50 + y where y is related to the ...
*Wednesday, February 1, 2012 by Anonymous*

**trig**

4 costheta +3sintheta=5,4sintheta-3costheta=WHAT
*Wednesday, February 1, 2012 by popy*

**trig**

in proving trigonometric identities if sec theta - tan theta sin theta is equal to cos theta. what is the correct answer?
*Wednesday, February 1, 2012 by mien*

**trig**

in proving trigonometric identities if 1 + sin^2 theta is equal to 2 sin^2 theta + cos^2 theta. what is the correct answer?
*Wednesday, February 1, 2012 by mien*

**trig**

in proving trigonometric identities if cot theta sin theta = cos theta. what is the correct answer?
*Wednesday, February 1, 2012 by mien*

**trig**

starting salary for a job is 30,000 with a guaranteed raise of $5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. how much money would you earn in the fifth year?
*Tuesday, January 31, 2012 by lisa *

**trig**

How can I find the exact value of 4cos(7ð/4)-2sin(ð/3)?
*Tuesday, January 31, 2012 by Anonymous*

**trig**

how can we find the value of sin -720
*Tuesday, January 31, 2012 by deeepika*

**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 by jessica*

**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 by andrea*

**trig and algerba**

6+7(t - 1) = 5(t + 7) + 8 what does t equal
*Tuesday, January 31, 2012 by Anonymous*

**trig**

If A=55 degrees 55 minutes and c=16, find a.
*Tuesday, January 31, 2012 by Zamaria*

**trig**

Prove (1+secx)/(tanx+sinx)=cscx
*Tuesday, January 31, 2012 by Matt*

**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 by bhangu*

**Trig**

Solve the following trig equation 2cos(x-π/6)=1
*Tuesday, January 31, 2012 by Matt*

**Trig**

Prove (1+secx)/(tanx+sinx)=cscx
*Tuesday, January 31, 2012 by Matt*

**Trig**

Solve 5^2x -4(5^x)=12
*Monday, January 30, 2012 by Lea*

**Trig**

Solve Log[8](log[5]x)=0
*Monday, January 30, 2012 by Jody*

**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 by DALE*

**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 by dianela*

**trig**

sin2x=cos3x then sinx=?(if 0<x<pi/2)
*Sunday, January 29, 2012 by arka bhaskar*

**trig**

Find sec^2 x (4 tan^2 x-3)
*Saturday, January 28, 2012 by Anonymous*

**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 by BreAnne*

**trig**

if x is an acute angle and sinx= cosx then find the value of x?
*Saturday, January 28, 2012 by deepika*

**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 by Melissa*

**trig**

What is cos(11pi/3)? Explain your thinking. What is sin(13pi/4) ? Explain your thinking.
*Friday, January 27, 2012 by BreAnne*

**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 by BreAnne*

**trig**

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

**Trig**

tan(θ) = a (a ≠ 0), find cot(θ).
*Friday, January 27, 2012 by Jimmy*

**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 by thomas*

**trig**

how to do root3 value
*Friday, January 27, 2012 by bhavya*

**trig**

Graph f(x)= second(2x+3.14/4)
*Friday, January 27, 2012 by Anonymous*

**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 by Anonymous*

**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 by Anonymous*

**trig**

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

**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 by Anonymous*

**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 by Anonymous*

**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 by Anonymous*

**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 by Anonymous*

**trig**

Are 22pi/5 and 100 degrees coterminal? explain.
*Thursday, January 26, 2012 by Anonymous*

**trig**

Find the exact value. Without using a calculator a) cos (-17pi/6) b) sec (3pi/2)
*Thursday, January 26, 2012 by Anonymous*

**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 by Anonymous*

**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 by josh*

**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 by josh*

**trig**

Give the reciprocal of the following. 7/15
*Thursday, January 26, 2012 by josh*

**trig**

If sin(θ) = 8/17 and θ terminates in QI, find cos(θ)
*Thursday, January 26, 2012 by josh*

**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 by damion*