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CBSE Guess > eBooks > Class X > Mathematics Definitions and Formula By Mr. Appala Raju

Mathematics Definitions and Formula

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  0o 30o 45o 60o 90o
sin 0 1
Cos 1 0
Tan 0 1 N.D
Cosec N.D 2 1
Sec 1 2 N.D
Cot N.D 1 0

Q. 24. Sin (90- ) =cos   tan (90- ) =cot sec (90- ) =cos
cos (90- ) =sin     cot (90- ) =tan     cosec (90- ) =sec

Q. 25.

A + ;       1 + ;            + 1= A
   A = 1 - ;            A - ;       A -            
A = 1 - ;                A = ;            A =

Q. 26. Area of the sector =

Q. 27. Length of an arc of a sector (l) =

Q. 28. Perimeter of sector = l+2r

Q. 29. Area of an equilateral triangle =

Q. 30. Volume of a cube =

Q. 31. Volume of a cuboid = l*b*h

Q. 32. Lateral surface area of a cube = 4

Q. 33. L.S.A of a cuboid (area of four wall) = 2 h ( l + b)

Q. 34. Total surface area of a cube =

Q. 35. T.S.A of a cuboid = 2 (lb + bh + hl )

Q. 36. Volume of a cylinder =

Q. 37. Curved surface area of cylinder = 2 h

Q. 38. T.S.A of cylinder = 2

Q. 39. Volume of a cone =

Q. 40. C.S.A of a cone = where l = where l is slant height

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Paper By : Mr.Appala Raju
Email Id : raju_yzag@yahoo.co.in
Ph No. : 0096566124759