List of Mathematical Formula’s

By
sehpaathi
-
0
1507

List of Mathematical Formula’s

Get Regular Updates On a Daily Basis

[wysija_form id=”1″]

 

 [do_widget “Recent Posts”]

Here is a list of all important mathematical formulas related to algebra, ratio and proportion, percentage, profit loss, speed maths, trignometry,

 

List of Formulae

Trigonometry

 

  1. 2p radian = 360°
  2. sin2 A+cos2 A = 1
  3. 1+ tan2 A = sec2 A
  4. 1 + cot2 A = cosec2 A
  5. sin (- q) = – sin q                      cos (- q) = cos q
  6. sin (90 – q) = cos q                  cos (90 – q) = sin q
  7. sin (90 + q) = cos q                 cos (90 + q) = – sin q
  8. sin (180 – q) = sin q                 cos (180 – q) = – cos q
  9. sin 2A = 2 sin A cos A

Statistics

  1. The sum of the first n natural numbers, 1 + 2 + 3 +…+ n =

Mensuration

  1. Area of a triangle =  Base × Height
  2. Area of a triangle =     Where   2s = a + b + c
  3. Area of an equilateral triangle = (side)2
  4. Area of a rectangle = Length × Breadth
  5. Area of a parallelogram = Base × Altitude
  6. Area of a rhombus =   (product of diagonals)
  7. Area of a trapezium =  (Altitude) × (sum of parallel sides)
  8. Circumference of a circle = 2r
  9. Area of a circle = r2
  10. Total surface area of cuboid with sides l, b, h = 2 (lb + bh +lh)
  11. Volume of cuboid = lbh , Surface area of cube = 6 (side)2
  12. Cylinder >>>> Curved surface area = 2 rh ; Total surface area = 2 r2 + 2rh
    Volume                       = r2h
    Cone >>>> Vertical height = h ; Slant height  = ;  Area of curved surface = r
  13. Total surface area = r2 +r    Volume=1/3 r2h
  14. Sphere >>>> Surface area = 4r2 ; Volume

Geometry

  1. The sum of two sides of a triangle is greater than the third.
  2. The sum of the interior angles of a polygon of n sides  = (n – 2) p.
  3. The angle inscribed in any semicircle is p/2.
  4. Two tangents can be drawn from any external point to a circle. These are equal in length.
  5. Angles in alternate segments are equal.
  6. Angles in equal segments are equal.

Algebra

  1. A2 – B2 = (A – B) (A + B)
  2. (A + B)2 = A2 + 2 AB + B2
  3. (A – B)2 = A2 – 2 AB + B2
  4. (A + B + C)2 = A2 + B2 + C2 + 2 (AB + BC + CA)
  1. Quadratic Equations – Any equation of the form ax2 + bx + c = 0, a  0, is known as a quadratic equation. Its roots are given by
    Sum of the roots = – b/a , Product of the roots = c/a
    Nature of the roots depends on the quantity D = b2 – 4ac, which is known as the Discriminant.

Arithmetic

  1.   ; Profit = S.P. – C.P. ; Loss = C.P. – S.P.
  1. Simple Interest =  ; Where P = principal, T = time, in years, R = rate

Compound interest = A – P ; Where A = P