If A =
2
{ : 9 0, 0} x x x
B =
{ : 3} x x N
Find i) A X B
Answers
Step-by-step explanation:
find A.
4
L4x
(b) IfA=
find the value of a.
tanA
9 (a) Prove that
10. (a) If OA OB
1 - cos2A
sin2A
(b) If sing = { (m + in), find the value of sine.
(c) Prove that: cos20° cos40° cos80°
1 / 1
= 12, ZAOB = 60° and |OA| = 4 find (OB
(b) If OA = 7T + 37° and OB = 27° - T' and AC = CÊ” find oC.
(c) In a set of observation of data, the first quartile is 5 and third quartile is 75. Find the
quartile deviation and its coefficient.
Group C
[11 X 4 = 44
11. Solve: x - 4x2 – 7x + 10 = 0
12. The third and sixth terms of a geometric series are respectively 12 and 96. Find the
sequence.
309
Speedy Optional Maths - Book 10
8. (a) If two straight lines ax - y - 7 = 0 and 3y + x-9 = 0 are perpendicular to each other,
(b) Find the inverse of the point P(3, 5) with respect to the circle x2 + y = 4.