Now a chord of a circle is such that AB = 10 cm. If the diameter of the circle is 20 cm, then the angle subtended by the chord at the center is.
Radius of circle= 10 cm Length of chord= 10 cm OA =10 =AB =OB now, draw a perpendicular on the chord from the center of the circle which divides the chord into two equal parts. In AAOC OA =10 =AB =OB AD=DB= 5 cm cosec = AD /AO =5 /10 = 1/ 2 = cos60° θ = 60° Hence, the angle subtended by the chord is 60°.
Select the number which can be placed in the column of question mark sign.
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
First row: 14, 17, 40
Second row: 52...
15 Select the number from among the given options that can replace the question mark (?) in the following series.
24, 48, 51, 204, 209, ?
Select the number from among the given option that can replace the question mark (?) in the following series.
4, 21, 86, 261, 526, ?
In each of the following questions, select the related number from the given alternatives:
8/15 : 2/5 : : 16/21 : ?
Find the missing number.
Find the missing number.
19 : 109 ∷ 21 : ?
Select the number from among the given options that can replace the question mark (?) in the following table.
Select the related number from the given alternatives.
29 : 65 : : 43 : ?
