Mathematics
In given figure, AB is a side of a regular pentagon and BC is the side of a regular hexagon. Find :
(i) ∠AOB
(ii) ∠OBC
Related Questions
Two chords AB and AC of a circle are equal. Prove that the centre of the circle lies on the bisector of angle BAC.
In the given figure, arc APB : arc BQC = 2 : 3 and ∠AOC = 150°. Find :
(i) ∠AOB
(ii) ∠BOC
(iii) ∠OBA
(iv) ∠OCB
(v) ∠ABC
The cost of 250 articles is given below :
Cost (in ₹) No. of articles less than 20 22 less than 30 40 less than 40 75 less than 50 190 less than 60 228 less than 70 250 Construct a frequency distribution table for the data given above. Also, answer the following :
(i) how many articles cost from ₹ 30 to less than ₹ 50 ?
(ii) how many articles have cost at most ₹ 40?
(iii) how many articles have cost at least ₹ 50?
The class marks of a distribution are 62, 67, 72, 77, 82 and 87. Find the class-size and class-limits.