| 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
