Trig check my work please?

89,037 results, page 52

science

the oxide formed when selenium burns in air dissolves in water to give a solution of selenious acid,H2SeO3.the solution conducts electricity and turns blue litmus paper identify the positively charged ion present in an aqueous solution of the acid and then using the answer ...

French

Can someone please check my work? On weekends, people go to different places. Read what the following people like to do. Then say where each one is going by choosing an appropriate place from the list. Use the appropriate forms of aller à. piscine, restaurant, cinéma, musée...

Chemistry/please check

Calculate the amount of heat in kilojoules reased when 50 of steam at 125 C are converted to 50 grams of ice at -125 C. AHsteam = m * Cp steam * At q1= 50g * 4.184 J/g C * (125-100)C= 5.23 x 10^J q2= m * AH 50g * 5230 J/g = 2.61 x 10^5 J q3= 50g *4.184 J/g C * (100-0)C= 2.10 ...

Science

In the UK, what is the recommended allowance for: 1) salt in a day 2) water in a day 3) fruit in a day 4) calories in a day men 5) calories in a day women 6) fat in men 7) fat in women my answers are: 1) 6g 2) 6 - 8 glasses 3) 5 4) 2550 5) 1940 6) 7) Please can you check my ...

Spanish

I am having troubles translating these sentences. 1.) Were the princesses singing? 2.) Did the queen used to cry? 3.) Do they like to sing? 4.) Doesn't the duchess like to sing? 5.) Which duke likes to sing? Thank you for using the Jiskha Homework Help Forum, BUT, you are ...

Language Arts - Maniac Magee

I need help finding Maniac Magee online. I need to be able to highlight parts of it with my mouse, but I can't find any sites that will work. If you don't find a site, please give me some words that I can use in the search bar to find a site. Please help, and I will appreciate...

Math--I need help!

I have these two questions on my assignment. Please help me. 80 mi. = _______ km. 9 cm. = _______ m. 9cm (1m/100cm)=??? 80miles (1 km/1600m) one mile = 1.6093 km so 80 times 1.6093 = what? one cm = 1/100 m or .01 m so 9 cm = 9 times .01 = what? 9 cm = 0.09 m. 80mi.= 128.72km. ...

Technology

1. What column do you put deposits in when you are balancing your checkbook? A. date B. transaction** C. debit D. credit 2. When creating a formula for balancing a checkbook, what do you subtract from the credits? A. debits B. check numbers** C. transactions D. dates 3. Why is...

calculus

prove that 5x - 7 - sin3x = 0 has at least one zero and prove that it has exactly one real zero. How am I supposed to show my work for this? I don't really understand how to show my work for the IVT. Without that I can't do any work for the MVT.

physics

2. A spring of spring constant 220 N/m is sitting on a table. You pick it up and stretch it so that it is 8.0 cm longer than it was on the table top. How much work did it take you to stretch the spring? (Hint: This work is just negative the work done by the spring on you!)

Calculus

Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval and please explain, using a graph of f(x), what the Riemann sum represents. My cousin needs help with her ...

Genetics (plz check answer)

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.

bio (plz check answer)

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.

English Improving writing rough draft

please check his for me thank you very much :) There are on going problems that need to be addressed.First there is uneven allocation of tasks. While Bonnie and Molly are working overtime at least twice a month, Jack and Rachel often have no work to do. This causes friction ...

Physics

Help how to find work If a worker pulls a 10kg bucket up a 25 m well, how much work has he or she done?

science

How much work is done on a 30 N rock that is lifted 1.5 m off the ground? show work.

Life orientation

Work ethics,4 actions to deal with unethical behavior at work

work ethics

it is ethical to take office supplies from work for home use ?

Social Studies

1:What fundamental problem did noah Webster see in the Articles of Confederation? > that states would always work in their own self-interest even if it meant harm to the nation as whole > that the central covernment would always favor large states over the smaller states...

Social Studies

1:What fundamental problem did noah Webster see in the Articles of Confederation? > that states would always work in their own self-interest even if it meant harm to the nation as whole > that the central covernment would always favor large states over the smaller states...

Math

Please check my answer thanks :) When repaing an installment loan of $3,500 with 20 equal monthly payments of $196 each , the apr of the loan is my answer is 13.5 %

anna

There is a right triangle. the legs are x and y and the hypotenuse is 120. the angle opposite x is 58. please check my answer. x= 120 y=64 because: SIN58= x/120 COS58=y/120

Math(Please check)

1) Use the cofunction identites to evaluate the expression without the aid of a calculator. cos^2 18 degrees + cos^2 72 degrees.

Science-PsyDAG

PsyDAG, could you please check my post on that science experiment thing, if you have time. I posted it yesterday on here, but you were never on. Thanks:-)

8th grade math

Can you please check my answer? Selena received $42 commission for selling a computer for $1400. What percent is her commission? my answer: 3%

Math(Please check)

Determine whether on not the following limit exists. If, so compute the limit. lim x->3 of sqrtx - 4 / x^3 +27 sqrt 3 - 4 / x^3 + 27 = sqrt 3 -4 / 54 Is this correct?

Algebra-Please check

For the ellipse (x-2)^2/49 + (y+1)^2/25=1 List center: (2,-1) the foci: -(sqrt 74) AND +(SQRT 74,0) Major axis: x=2 Minor axis: y= -1 Vertices: (7,0) (-7,0) (0,5) (0,-5) Is this correct?

chemistry(Please Check)

CaCl2(aq)+Na3PO4(aq) -----------> Ca3(PO4)2(s) +NaCl(aq)4) If the “H” for this reaction is -45.5 kJ/mol, is the reaction endo- or exothermic? Exothermic

science

Please check these! Physical or Chemical properties? 1. solubility = physical 2. melting point = physical 3. reacts with water to form a gas = physical

english Please check answer

10. In a research proposal, your sources should not have the potential to answer research questions. A.) true *B.) false Thank You

Calculus-Differentials-Check please?

if the sides of a cube are measured with an error of 2% use differentials to estimate the relative error in the volume df= 3x^2 * dx df= 3x^2 * 1/50 df= 3/50*x^2 is this right?

Algebra 1--Step-by-Step

Can someone show me how to solve these step-by-step? Please? Thank you. Factor each polynomial by grouping. Check your answer. 1. 2r^2 - 6r + 12 - 4r 2. 14q^2 - 21q + 6 - 4q 3. w^3 -4w^2 + w - 4 4. 2p^3 - 6p^2 + 15 - 5p

@JoJay12

I deleted your umpteen questions because you included no answers. If you want help on a few, please post no more than five questions along with your answers. We'll check them for you.

Spanish-7th grade-Please check my answers

Could someone check these please?I had place a possessive adjective in place of el 1. El hermano de Juan y Pedro se llama Bret Answer: Su hermano se llama Bret 2.Replace los with possessive Los hermanos de Paco y Linda se llama Santiago y Jose Answer: Sus hermanos se llaman ...

Trig

Use the half angle formula to find the exact value of tan 7 pie/8

Trig

Solve the equation on the interval 0 less than or equal 0 < 2pi. 1. sec 30/2 = -2 2. cos(20 - pi/2) = -1 3. tan(0/2 + pi/3) = 1

trig

transform the expression on left to one on right csc x-sin x to cot x cos x

Trig

Hi. Can somebody help me solve this equaton with EXACT answers? ----- sin3x = 0 ----- Thankyou! All help is appreciated.

Trig

Find the exact value of: sin405. reference angle=225 sin225= -.707106781 = -.71

trig

Write an expression that gives all solutions to the equation sin x + cos x = - radical 2

trig

Give an equation of a cosine function of x which has a phase shift along x of 5 units and an amplitude of 4

trig

Give an equation of a cosine function of x which has a phase shift along x of -1 unit and a wavelength of pi/3

trig

simplify and write the trigonometric equation in terms of sine and cosine. tan^2x-sec^2x

Algebra2/Trig

Evaluate the indicated function for f(x)=x2+1 and g(x)=x-4 Note: x2+1 means x squared plus one. (2f)(5)

trig

Find cosq and sinq if the terminal side of q lies along the line y = - 2 x in quadrant IV.

Trig....

use specific triangles and the unit circle to geth the values. tan(5pi/6?)

Trig

Find the distance from pi. 7 pi/6. I subtracted 2 pi from this and got -5pi/6. But the correct answer is pi/6. Whwere did this come from?

trig

Rewrite cos4x as an equivalent expression that does not contain powers of trigonometric functions greater than 1.

trig

Rewrite 8 cos2 x as an equivalent expression that does not contain powers of trigonometric functions greater than 1

math

The terminal side of theta is in Quadrant III and lies on the line y = 2x. What are the 6 trig functions?

Algebra 2/trig

How would I calculate the following function value? tan = 29degrees 36feet

trig

Write the following equation in standard form and identify the type of conic: 9y^2 - 4x^2 + 8x + 18y + 41 = 0

trig

Find the 6 trigonometric function of teta if it's terminal side passes through the point(1,2)

trig

on the same set of axes sketch the graph of f(x)=sin2x and g(x)=2sin x for x (o,180 degrees)

trig

Given tan A = .29 find the angle A in degrees. Round your answer to the nearest hundredth.

12th grade Trig

What are the period and 2 consecutive asymptotes? 1. y= -3tan pi x 2. y= 2 sec 4 x 3.y= csc x/3 4.y = 3cot pi x/3

trig

find exact value using sum or differnce equations. tan(19pi/12)

Math/Trig

Find two exact values of sin(cos­­ˉ¹ √5/6)

Math/Trig

Find the area of a sector of a circle with a radius of 3 m and a central angle of 125degrees.

Math/Trig

Find the area of triangleABC with B=47.6degrees, a=3.6, and c= 9.7. Round your answer to the nearest tenth.

Math/Trig

Find the area of triangleABC with B=47.6degrees, a=3.6, and c= 9.7. Round your answer to the nearest tenth.

trig

Find the altitude of an isosceles triangle whose base in 30 cm vertex angle is 75 degres

trig

2 cosine squared pi over 8 minus 1 find exact value of given expression

trig

use a sum or difference identity to find an exact value cos pie/12

trig identies 5.3 &5.4

use a sum or difference identity to find an exact value pie/12

identities trig?

find all solutions to the equation in the interval [0,2pie] cos2x=cosx

trig

angle a is acute and sin = u. find the other five trigonometric functions in the terms of u.

trig

use a half angle formula to find the exact value of cos 75 degree

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.

Trig

Use a cofunction to write an expression equal to csc(4ð/11). I need help solving this problem. Thank You

Algebra 2 / Trig

Given cos X = -0.147, find two possible values for X that are not co-terminal.

Trig

find cos x/2, sin x = 1/4, 360 < x < 450, use half-angle identity

trig

find the exact zeros of the function in the interval [0, 2π) 2 cot squared x + 3 csc x=0

Trig

Find the amplitude, period, and phase shift of the following function: y=-2cos2(θ+45)

Trig

A car is traveling at a speed of 55 mph with a bearing of 210°. What vector represents the velocity?

trig

find a value of interval in degrees cotalpha=1.3692847 alpha=0.023903 is that correct?

trig

Solve sin ¥è = -0.204 for 90¨¬ < ¥è < 270¨¬. Give your answer to the nearest tenth of a degree.

trig

evaluate the expression below at t=4 p=$400 and r=-9% round youre answer 2 decimal place

trig

Find the exact value by using a half-angle identity. cos 22.5 degrees

Trig

Find the exact value of tan 5pi/12 using the half-angle identity.

trig

write equations expressing: 19cos(theta-50degrees) as a sum of sine and cosine.

trig

write an equation expressing 19cos(theta-50degrees) as a sum of sine and cosine.

trig

if the terminal ray of an angle 0 in standard position passes through the point (-1,3),then cos0=

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

trig

The minute hand of a clock is 6 inches long. What distance does its tip move in 16 minutes?

trig e-maths

giving that cosx=4/5 and siny=12/13, find cos(x+y) when x is acute and y is obtuse angle

Trig-desperate

f(x)=sin2x and g(x)=1/2tanx for x is the element of [-90;180] 8.1)calculate the x-coordinates of the points of intersection of f and g.

Trig

How do you find the exact circular function value of csc(-23pi/6)? I don't know how to do the pi symbol on the keyboard.

trig

a voltmeter's pointer is 3 cm in length. find the degrees through which is rotates when it moves 1.1 cm on the scale?

Trig

There is an airplane at an altitude of 12000 ft. The angle of depression is 1 degree. How far on the ground is the plane.

trig

Use an addition or subtraction formula to simplify the expression: tan(2−u)=cot(f(u)).

TRIG

show that cos(pi x) = pi cosx is not an identity by finding a single value of x for which it fails to hold.

math

(-3/5, 2) is a point on the terminal side of theta, find the value of the six trig functions

trig

the mini tent of the clock is 5 cm long.how far is the tip of THE HAND TRAVEL IN 35 MINS.

Math-Trig

Find all angles in degrees that satisfy each equation. tan(a)+rad3=0

trig

Solve exactly over the indicated interval: 2sinx+cscx=3, 0<theta<360

math trig

If a ferris wheel has a radius of 20.5meters, how tall would a 45 degree angle be?

trig

for the given angle, name the quadrant in whihc the terminal side lies. -350deg

trig

Find all real numbers in [0, 2π) that satisfy the equation. cos 2x = √(2)/2

trig

Find all values of ¸ in [0°, 360°) that satisfy the equation. 2 sin 2θ - √(3) = 0

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