Math Terms StartingWith T

In this page math terms startingwith T we are going to see definitions of mathematical terms starting with the letter "T". We have listed out almost terms in math startingwith T.In math also it is very important to know the meaning of many important words which are being used in the subject math.Each term is defined and examples are provided where ever it is necessary. Links are given for every words, by using this students can learn the meaning and its application more clearly.




In geometry a tangent or tangent line to a plane curve at a given point is the straight line that touches the curve at that point.


This word  is derived from two Greek words "trigon" and "metra". This is providing the relationship between the measurements and sides of the angle in a triangle.

Trigonometric ratios

we have six trigonometric ratios.They are sin θ,cos θ,tan θ,cosec θ,sec θ and cot θ

  1. sin θ = Opposite side/Hypotenuse side
  2. cos θ = Adjacent side/Hypotenuse side
  3. tan θ = Opposite side/Adjacent side
  4. Cosec θ = Hypotenuse side/Opposite side
  5. Sec θ = Hypotenuse side/Adjacent side
  6. cot θ = Adjacent side /Opposite side

Trigonometric identities

  1. sin² θ  + cos² θ = 1
  2. sin² θ  = 1 - cos² θ
  3. cos² θ = 1 - sin² θ
  4. Sec² θ - tan² θ = 1
  5. Sec² θ  = 1 +  tan² θ
  6. tan² θ  =  Sec² θ - 1
  7. Cosec² θ - cot² θ = 1
  8. Cosec² θ = 1 + cot² θ
  9. cot² θ =  Cosec² θ - 1


A dissection Chinese puzzle consisting of seven flat shapes(tans) which are put together to form a shape.


It is a line that passes through two or more other lines that in the same plane at different points

Two circles intersecting externally

We can say two circles touch each other externally when they lie on the opposite sides of the common tangent.

Two circles intersecting internally

Two circles will be touch each other internally when they lie on the same side of the common tangent.


A conjecture if it is proved becomes a theorem. Thus a statement which has been proved to be true is called theorems. A conjecture, if it is disproved becomes a false statement.

Total surface area

Total Surface area is the second branch of the main topic area. Which means the measurement of extension of outer part of the solid completely.Whereas the curved surface-area is the measurement of extension of only the curved part of the solid.

Tabulation of data

Tabulation of data is the method of systematic placing of data into tabular form. As we know, each table contains rows and columns, we can arrange the data in the symmetric form tabular form according to the collected information in rows and columns. The main purpose of this form is to simplify the presentation and facilitate the comparison.

Types of tabulation of data:

  • Simple or one-way tabulating data
  • Double or two way tabulating data
  • Complex tabulating
These are the words in math terms startingwith T.

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