Question

the product of the zeroes of the polynomials 9x' 5 are
15. If sinA+sin 'A=1. Then the value of the expression cos'Arcos' is
and
respectiv
Question numbers 16 to 20 are short answer type question of 1 mark each
16. What is the sum of first n natural numbers?
17. The probability that it will rain tomorrow is 0.85. What is the probability that it will no
rain tomorrow?
18. If x = a sine and y = b cose, write the value of b'x'+a
+a'y?
19. What is distance between two parallel tangents of a circle of radius 4 cm?
20. Find the quadratic equation whose roots are (2+13) and (2-V3).
Or
If x²-2x+1=0, find the value of x +
1
Section B.
Question numbers 21 to 26 carry 2 marks each.
21. Express the following numbers as the product of its prime factors:
(A) 234
(B) 945​

Answer 1

Answer:

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