Online Math Tutor From India
Aug 22, 2026
Algebra Teacher for Kids Online
Aug 22, 2026
Math Classes for Preschoolers Online
Aug 22, 2026
Math Tutors for Elementary Students
Aug 22, 2026
Common Core Math Curriculum: Standards, Grades & What It Means
Aug 21, 2026
Constructing an Angle of 60 Degrees: Compass Steps
Constructing an angle of 60 degrees with only a compass and straightedge means building one corner of an equilateral triangle, whose three angles are each 60°. Draw a base ray, sweep an arc from the endpoint, sweep an equal arc from where it crosses, and join the vertex to the intersection. This article shows the step-by-step image series, proves why it lands at exactly 60°, and works through six examples.
Aug 21, 2026#Geometry
Annulus - Definition, Area Formula, and Examples
An annulus is the flat ring-shaped region between two concentric circles - circles sharing a centre but with different radii. Its area is π(R² - r²), where R is the outer radius and r the inner radius. This article defines the annulus, derives its area and perimeter, works through examples, and clears up the mistakes students make.
Aug 21, 2026#Geometry
Tan Pi : Exact Value 0, and How to Find It
The value of tan π is exactly 0. This article shows why, using tanθ = (sinθ)/(cosθ) with sinπ = 0, reads the same answer off the unit-circle point (-1, 0), gives a tangent table in degrees and radians, and works through examples, including why tanπ is a clean zero rather than an undefined value.
Aug 21, 2026#Trigonometry
Sin3x : Formula, Derivation, Proof, and Examples
Sin3x equals 3sin x - 4sin³ x, the triple-angle identity that writes the sine of a tripled angle in terms of the sine of the single angle alone. This article covers the formula, its step-by-step derivation, the rearranged sin³ x form, six worked examples, the mistakes students make, and where the triple-angle identity is used.
Aug 21, 2026#Trigonometry
Algebraic Identities — List, Proofs, and Examples
Algebraic identities are equations that stay true for every value of their variables — for example (a+b)² = a² + 2ab + b² and a² - b² = (a+b)(a-b). This article gives you the full standard list (square, cube, and three-variable identities), a geometric and an algebraic proof, six worked examples, and the slips that cost the most marks.
Aug 21, 2026
Algebra 2 Class Online For Kids
Aug 20, 2026
Algebra 2 Tutors for Kids Online
Aug 20, 2026
Product of Vectors — Dot and Cross Product Guide
The product of vectors comes in two distinct forms: the dot product a · b = |a||b|cosθ, which returns a number, and the cross product a × b = |a||b|sinθ, n, which returns a vector. This article maps both, shows when each one is the right tool, and extends the idea to the scalar triple product.
Aug 20, 2026#Algebra
Exponents — Definition, Laws, and Examples
An exponent tells you how many times to multiply a number, the base, by itself — so 2⁵ means 2 × 2 × 2 × 2 × 2 = 32. This article covers what an exponent is, the parts of a power, the seven laws of exponents at a glance, negative, fractional, zero, and decimal exponents, where exponents show up in the real world, and the slips that cost marks.
Aug 20, 2026#Algebra
Online Trigonometry Tutor - Concept-First Trig Help
Aug 20, 2026
Slope of Parallel Lines: Formula & Examples
The slope of parallel lines is the same for both lines: if two lines are parallel, then m₁ = m₂. This article explains why equal slopes force two lines to stay parallel, derives the rule, works through six examples, and clears up the mistakes that trip students up most.
Aug 20, 2026#Geometry
Mental Maths for Grade 5: Live Online Classes
Aug 20, 2026
Mental Maths for Grade 4: Live Online Classes
Aug 20, 2026
Tetrahedron: Faces, Edges, Vertices, Volume, and Surface Area
A tetrahedron is a 3D solid with 4 triangular faces, 6 edges, and 4 vertices — the simplest possible polyhedron. A regular tetrahedron (all faces equilateral) has volume (√2)/12a³ and total surface area √3,a², where a is the edge length. This article covers its faces-edges-vertices count, derives the volume and surface-area formulas, shows its net, and works through examples.
Aug 20, 2026#Geometry
Matrix Scalar Multiplication - Rules, Properties, Examples
Matrix scalar multiplication means multiplying every entry of a matrix by a single number called a scalar — if A = [a ij ] and k is a scalar, then kA = [k,a ij ]. This article covers the rule, all its properties (commutative, associative, distributive), how it differs from multiplying two matrices, and six worked examples.
Aug 20, 2026#Algebra