Join in expert discussion on general math topics that are not applicable to the specific categories. This includes topics are usually high school math level. Homework help is available.
Sub-forums
Threads
Evaluating trigonometric functions with reference angles
- mathdad
- · Replies 2 ·
Which angle has a larger cosine value?
- mathdad
- · Replies 6 ·
What is the reference angle for 60° and -60°?
- mathdad
- · Replies 4 ·
What is the reference number given -5π/6?
- mathdad
- · Replies 4 ·
Evaluating sin 210° and sin(-210°) using reference angles
- mathdad
- · Replies 2 ·
High School Exponential Growth: Modeling growth in months vs years
- opus
- · Replies 3 ·
High School Math Jokes: 1-1=0, but 2=0? Impossible!
- Harsha Avinash Tanti
- · Replies 5 ·
Solve the equation cos^8θ+sin^8θ−2(1−cos^2θsin^2θ)^2+1=0
- lfdahl
- · Replies 4 ·
Undergrad Euler, De Moivre and a printing error
- wirefree
- · Replies 2 ·
Why use point-slope form for linear equations?
- mathdad
- · Replies 4 ·
How can the given equation be verified without using a calculator?
- mathdad
- · Replies 3 ·
Undergrad Rational powers of irrational numbers
- BWV
- · Replies 27 ·
[ASK] How long must he wait until the ball fall to the ground if g = 10m/s^2
- Monoxdifly
- · Replies 6 ·
Calculating Elevation Angle to Hit Target at 100 m and 10 m
- Monoxdifly
- · Replies 5 ·
High School Is infinity truly infinite if it has something else in it?
- ddjj77
- · Replies 4 ·
Can You Name 9 Important Precalculus Topics for a Strong Foundation in Calculus?
- mathdad
- · Replies 2 ·
Finding the Equation of a Line with Point-Slope Formula
- mathdad
- · Replies 2 ·
Approximating Trig Values using the Unit Circle
- mathdad
- · Replies 11 ·
Equation to find an unknown point on a graph
- Jazoar
- · Replies 1 ·
Graduate Vector Notation in Nolting Theoretical Physics 1
- Teclis
- · Replies 1 ·
What is the rate for getting your paycheck early from a payday lender?
- mathdad
- · Replies 11 ·
Evaluate sin 6 without using a calculator?
- mathdad
- · Replies 27 ·
High School Solving |x| > |x-1| with absolute value inequalities
- mishima
- · Replies 4 ·
Prove Polynomial Congruence $(x+y)^n \equiv x^n + y^n$ (mod $p$)
- lfdahl
- · Replies 2 ·
What's the difference in resistance between A and B vs A and C?
- MermaidWonders
- · Replies 16 ·
Reflecting a parabola across the line y = -x algebraically
- Monoxdifly
- · Replies 4 ·
High School What are the basic rules for graphing properly?
- FS98
- · Replies 3 ·
Why is the book's answer for rationalizing the denominator x^(3/2)?
- mathdad
- · Replies 6 ·
How Can I Evaluate Trig Functions Without a Calculator?
- mathdad
- · Replies 6 ·
How can I determine the biggest trig value without a calculator?
- mathdad
- · Replies 4 ·
When do we need to rationalize numerators and denominators?
- mathdad
- · Replies 2 ·
Can Two Numbers Satisfy These Exponential Conditions?
- mathdad
- · Replies 4 ·
Big Denominator = Small Fraction
- mathdad
- · Replies 2 ·
Converting 500 rpm to angular and linear speeds
- mathdad
- · Replies 4 ·
High School Did President Garfield really come up with an alternate proof?
- swampwiz
- · Replies 3 ·
Angular speed of smaller wheel with r=10cm, R=50cm, 100rpm
- mathdad
- · Replies 2 ·
Angular speed of smaller wheel with r=6 cm, R=10 cm
- mathdad
- · Replies 2 ·
Undergrad How High Must You Be to See 1° of Earth's Curvature?
- FelixLudi
- · Replies 10 ·
Prove Area of Equilateral Triangle
- mathdad
- · Replies 9 ·
Angular and linear speed problems from Cohen precalculus section 6.2
- mathdad
- · Replies 6 ·
Is FOIL used to multiply radicals in sqrt{x - 3} • sqrt{x}?
- mathdad
- · Replies 10 ·
How many regions can be obtained by drawing two squares?
- Sadia Ali
- · Replies 5 ·
Degree Measure of Central Angle
- mathdad
- · Replies 4 ·
What is the nearest 10 mph to 684,288,000 pi miles per hour?
- mathdad
- · Replies 3 ·
What is the Correct Value of r if 9!/(9-r)! = 840?
- mathdad
- · Replies 2 ·
Is 106 = 9Cx correct for this combination problem?
- mathdad
- · Replies 13 ·
Finding an unknown side of an irregular quadrilateral
- 8008jsmith8008
- · Replies 1 ·
Divide into 2 congruent pieces
- I like Serena
- · Replies 2 ·
Looking for math homework help
- hotpink4
- · Replies 7 ·
Graphing Distance vs. Time for a Commuting Student's Forgotten Term Paper
- mathdad
- · Replies 22 ·
IMO question’s solution: How can the answer be explained in a simple way?
- Winson
- · Replies 1 ·
Did I Calculate the Perimeter of A Sector Correctly?
- mathdad
- · Replies 2 ·
Graduate Binary fractal tree with equidistant leaves on a circle
- Ventrella
- · Replies 4 ·
Divide into 5 congruent pieces
- I like Serena
- · Replies 2 ·
What is the area of the quadrilateral?
- Monokonos
- · Replies 1 ·
Calculate third point from 2 points and an angle
- GamerVSL
- · Replies 3 ·
Undergrad What does the vertical line in this equation mean?
- APUGYael
- · Replies 4 ·
Undergrad How to calculate the tractive effort of a train?
- Tim Leijten
- · Replies 13 ·
Undergrad Two-bottle drop test: finding optimal interval strategy for 100 rungs
- srfriggen
- · Replies 26 ·
Odd Arrangement - Isolate the term "Ru" in V/(Vin*R)=(1/(R+Ru*k))-(1/(R+Ru))
- Outdoors
- · Replies 6 ·
Calculate the rotational frequency in r/s and the diameter of the drive pulley
- mikeystrike
- · Replies 1 ·
Graduate Why mathematicians do not solve mathematical theories?
- Jacob Dizen
- · Replies 10 ·
Whatzit? Number Fun - 144 / (1 + 4 + 4) = 1*4*4
- Wilmer
- · Replies 5 ·
Divisibility of Terms in an Arithmetic Series
- mathdad
- · Replies 5 ·
Finding $\theta$ in a Geometric Diagram
- anemone
- · Replies 1 ·
Induction Prove: Making Fractions 1/2 to 1
- cshao123
- · Replies 1 ·
Which fractions can you make (with proof)?
- cshao123
- · Replies 7 ·
High School What Happens to 1D Dimensions When They Curl Up in Superstring Theory?
- bluecap
- · Replies 18 ·
9.25 a centrifuge takes up only 0.127 m of bench space
- karush
- · Replies 5 ·
Show that sin10∘ is irrational number
- kaliprasad
- · Replies 8 ·
Undergrad Transforming Legendre polynomials from (-1,1) to (1,2)
- confused_engineer
- · Replies 2 ·
High School What is the name of this triangular geometric shape?
- shintashi
- · Replies 2 ·
High School Are constant terms and their exponents in polynomials?
- Greg Bernhardt
- · Replies 15 ·
How to Calculate the Updated Salary Ratio in a Factory?
- mathdad
- · Replies 4 ·
How do I calculate the side of a rhombus using the bisector of an angle theorem?
- Yankel
- · Replies 1 ·
Ice skaters collision: Daniel 65 kg, Rebecca 45 kg at 14 m/s
- karush
- · Replies 6 ·
Undergrad Why does the density of perfect powers decrease along the number line?
- PT1
- · Replies 16 ·
Surface of protein channel in membranes
- Joppy
- · Replies 2 ·
What is the present age of the mother and son in this age problem?
- mathdad
- · Replies 4 ·
How can we solve a radical equation without using a calculator?
- mathdad
- · Replies 5 ·
Undergrad Can I solve equations with divisor functions algebraically?
- Delta31415
- · Replies 4 ·
Evaluate the product sin1°sin2°sin3°...sin89° without a calculator
- lfdahl
- · Replies 5 ·
How precise is (4/3)^4 compared to π?
- mathdad
- · Replies 4 ·
Solving an Investment Word Problem
- Elissa89
- · Replies 7 ·
Show that 8 - 2√7 equals (√7 - 1)²
- mathdad
- · Replies 4 ·
How many birds are at the top and bottom of the tree?
- mathdad
- · Replies 6 ·
High School Does changing the equation of a function require a new function name?
- Abu
- · Replies 7 ·
High School Behavior of polynomial functions at their zeros
- opus
- · Replies 6 ·
What is the difference between log and ln?
- mathdad
- · Replies 3 ·
Exponential Equations solve 27^x=1/√3
- Fright535
- · Replies 2 ·
High School Fermat's Last Theorem; unacceptable proof, why?
- v4theory
- · Replies 12 ·
[ASK] polynomial f(x) divided by (x - 1)
- Monoxdifly
- · Replies 2 ·
Graduate Are There More Integer Solutions to a^3+b^3+c^3=d^3 Beyond 3^3+4^3+5^3=6^3?
- kuruman
- · Replies 2 ·
Test whether the integer is a prime
- evinda
- · Replies 96 ·
How Far is Point (b,0) from the Final Destination (10,0)?
- mansourjavna
- · Replies 1 ·
Find Real Solutions to x4-2x3+kx2+px+36 = 0
- DragonMaths
- · Replies 12 ·
What Is the Smallest Good Number for a Subset of Squares?
- lfdahl
- · Replies 2 ·
Undergrad What Lobachevski meant by parallel lines
- nomadreid
- · Replies 5 ·
Find n where sum of triangular numbers equals 364
- Monoxdifly
- · Replies 5 ·