Free pre-calculus mathematics homework help from qualified mentors. Math courses prior to calculus homework. Please use the template when requesting help and show your work.
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Prove the trigonometric identity
- icystrike
- · Replies 2 ·
What Is the Probability of Drawing All White Balls in This Experiment?
- mr_k
- · Replies 4 ·
Finding M^n*U and M^n*V, and computing (A+I)^21*B
- Michael_Light
- · Replies 4 ·
Proving that matrix A is unitary and find its inverse.
- zacl79
- · Replies 1 ·
How to solve for x in this trig jumble?
- zeion
- · Replies 4 ·
Squaring trig functions in sec²X + tan²X = 6
- Dragonetti
- · Replies 2 ·
Initial and terminal arm in trig
- supernova1203
- · Replies 10 ·
How Do I Find the Horizontal Distance of a Bug on a Moving Ladder?
- nicnic20
- · Replies 3 ·
Sinusoidal Graph - sub intervals
- CrossFit415
- · Replies 5 ·
Limit of (2 + cos 2x - sin x)/(x cos x + x sin 2x) as x → π/2
- songoku
- · Replies 5 ·
Solving Equations with Fractional Exponents
- Peter G.
- · Replies 7 ·
Combining Inequalities: Finding the Solution Set for Quadratic Inequalities
- t_n_p
- · Replies 5 ·
Finding the objective function and constraints from vertices A, B, C
- Roni1985
- · Replies 2 ·
Probability- precalc permutation and combination
- Roni1985
- · Replies 2 ·
Understanding When to Use + / - in Pythagorean Identity
- CrossFit415
- · Replies 3 ·
True positive / false positive probability
- rogenfx
- · Replies 2 ·
Why does 65° divided by 180 give a decimal instead of 13π/36?
- CrossFit415
- · Replies 4 ·
Is Secant Inversely Proportional to Cosine?
- supernova1203
- · Replies 2 ·
Uniqueness of Inverse Operators Theorem and Proof
- Grand
- · Replies 1 ·
Does AB=0 necessarily mean BA=0?
- Grand
- · Replies 1 ·
Trig problem (Diagram included)
- supernova1203
- · Replies 3 ·
Right triangle with four jointed links
- chawki
- · Replies 7 ·
Expected profit for a contractor with a 0.7 probability of gain
- YODA0311
- · Replies 2 ·
What is the probability of drawing a full house with three aces and two kings?
- YODA0311
- · Replies 38 ·
How do I simplify this fraction?
- TheTechNoir
- · Replies 6 ·
Binomial coefficients C(n,k) increase to the middle then decrease
- DrWillVKN
- · Replies 3 ·
Combinatorics - In how many ways can three aces and two kings be drawn
- YODA0311
- · Replies 2 ·
Solving 4sin3(x)=5sin(x) in [0,2╥)
- MacLaddy
- · Replies 3 ·
Can we use whole numbers instead of pi fractions on trig graphs?
- CrossFit415
- · Replies 7 ·
Is my proof of Simon's line theorem complete?
- disregardthat
- · Replies 8 ·
Determine Outliers in a non-normal distribution
- ExNihilo
- · Replies 3 ·
Surface area of a cylinder question
- Asphyxiated
- · Replies 3 ·
How Do You Solve a Cubic Polynomial with No Rational Roots?
- ThomasMagnus
- · Replies 5 ·
Why does tanθ = 1/2 > 0 and sin θ mean that it lies in quadrant 3
- Neopets
- · Replies 2 ·
Simple Algebraic Problem (yet confusing 0_o)
- Nano-Passion
- · Replies 2 ·
Sum of first n even terms exceeds first n odd terms by 4n in arithmetic series
- Michael_Light
- · Replies 4 ·
Using the Cosine Law on Right and Oblique Triangles
- supernova1203
- · Replies 4 ·
Finding a Perpendicular Point on a Tangent Line at the Center of a Circle
- bolzano
- · Replies 4 ·
In how many ways can three aces be drawn?
- YODA0311
- · Replies 3 ·
Finding the critical angle for total internal reflection
- jegues
- · Replies 5 ·
Domain of A Composite Trig Function
- darkchild
- · Replies 1 ·
Books for mental math techniques
- Miike012
- · Replies 3 ·
How Can You Correctly Manipulate Inequalities Involving 1/(n-2) and Epsilon?
- mjjoga
- · Replies 2 ·
Determining Theta in Sin Ratio: Why the Difference?
- supernova1203
- · Replies 1 ·
Variance of tomato income from crop data with linear relationship
- omni
- · Replies 9 ·
Why does Gaussian elimination give 0y = -3 for this system?
- killersanta
- · Replies 3 ·
Finding the minimum number of positive roots where a₂ + a₃ is negative
- zorro
- · Replies 5 ·
Probability of getting 2 pairs
- cse63146
- · Replies 10 ·
How do I graph a horizontal compression with trig functions?
- CrossFit415
- · Replies 6 ·
A tutorial question (algebra prove)
- numberthree
- · Replies 1 ·
Precalc DeMoivre's Theorem to find powers of Complex numbers
- physstudent1
- · Replies 7 ·
Solve log₆(5y − 5) = 4x² + 7 for y
- hibachii
- · Replies 5 ·
Why does sin80°csc80° equal 1?
- CrossFit415
- · Replies 10 ·
Simplify vf = [(vcosx/2)^2+((2v-vsinx)/2)^2)]^1/2
- shanshan
- · Replies 4 ·
Solving equation containing absolute values
- jkristia
- · Replies 2 ·
Solving A+b*sqrt2=c with Positive Rationals
- madah12
- · Replies 3 ·
Permutations: 4 Balls in 7 Boxes with Maximum 1 Ball Each - Verify Answer
- zorro
- · Replies 4 ·
Simplify logarithmic equations
- hibachii
- · Replies 2 ·
What does congruence modulo 8 mean?
- michonamona
- · Replies 2 ·
Approximating the Square Root of 11 Using Binomial Expansion
- Michael_Light
- · Replies 5 ·
How Do You Convert Sin and Cos Values to Tan in Trigonometry?
- CrossFit415
- · Replies 5 ·
How Many Different Parallograms Given 3 Points
- darkchild
- · Replies 2 ·
Proving Perpendicular Lines in a Quadrilateral
- horsecandy911
- · Replies 3 ·
How many passengers should an airline overbook to maximize revenue?
- Lionheart3388
- · Replies 3 ·
Solving Quadratic Equation: (a+b+c)^2
- nirajnishad
- · Replies 1 ·
Finding the coefficient of x5 in (1-x)6(2x+3)4
- Michael_Light
- · Replies 1 ·
How can I prove this formula for n = 2?
- lovemake1
- · Replies 1 ·
Rewrite equation (rationalize denominator)
- jkristia
- · Replies 6 ·
Finding nth roots of a complex number
- mharten1
- · Replies 2 ·
Mathematical Induction am I on the right track?
- tangibleLime
- · Replies 1 ·
How to isolate x in a quadratic equation
- f24u7
- · Replies 4 ·
Why does Sin (right angle plus theta) equal cos(theta)?
- Miike012
- · Replies 2 ·
Complex number question (i think )
- Svensken
- · Replies 1 ·
Proving: cosA/(1-tanA) + sinA/(1-cotA) = sinA + cosA
- Miike012
- · Replies 6 ·
What is the solution to this complex numbers question?
- homad2000
- · Replies 1 ·
Trigonometric Equation: Solving for Theta with Quadratic Formula
- ThomasMagnus
- · Replies 4 ·
How do you square a negative exponent for kinetic energy calculation?
- Drakkith
- · Replies 4 ·
Finding angle in triangle and semicircle
- jacky50
- · Replies 5 ·
Sales revenue by category in 2006 and 2007
- chawki
- · Replies 2 ·
How Do You Simplify 3 log[5](5^2)?
- recoil33
- · Replies 1 ·
Sum of consecutive cubes formula proof by induction
- tangibleLime
- · Replies 3 ·
Can someone kindly explain? Thanks
- whatisphysics
- · Replies 1 ·
What is the Maximum Span of an Overhang Created by Stacking Identical Planks?
- lovemake1
- · Replies 20 ·
Finding other trig functions when cosθ=-4/5 in quadrant 3
- land_of_ice
- · Replies 3 ·
Matrices and number of solutions
- t_n_p
- · Replies 3 ·
Prove by induction divisibility question
- shaner243
- · Replies 2 ·
Proofing Modulus Operator Associativity
- Bohrok
- · Replies 1 ·
Table Tournament Results: Find Draws and Losses for Team D, Match B vs C
- chawki
- · Replies 3 ·
Domain and range of a piecewise function with three pieces
- sadaf2605
- · Replies 2 ·
Find the Function x(t) | Bug Climbing a 30-Foot Ladder Against a Wall
- nowiz68710
- · Replies 4 ·
Proving triangle A'EF is isosceles using altitudes
- chim richalds
- · Replies 2 ·
Pool filling at constant rate, then draining while filling simultaneously
- chawki
- · Replies 5 ·
How Do You Find the Line of Intersection Between Two Planes?
- Scharles
- · Replies 1 ·
Linear algebra problem with transpose
- Bohrok
- · Replies 2 ·
Solve for Tree Height: tan45=h/22
- chawki
- · Replies 3 ·
What is the mistake in solving this trigonometry simplification problem?
- fawk3s
- · Replies 2 ·
Finding the sum of a series with a power of r
- Michael_Light
- · Replies 1 ·
Solving Inverse Trig Function: sin-1(1/sqrt2) Without a Calculator
- MacLaddy
- · Replies 5 ·
How do d1 and d2 relate to L, x, h1, and h2?
- Miike012
- · Replies 4 ·
Similar triangles to find support intersection height in terms of H1 and H2
- Miike012
- · Replies 7 ·