. OPQ is a sector of a circle , center O and radius r cm , ∠ POQ = θ°.The area , in cm2 , of
sector OPQ is
A. rθ B.1/2 rθ C. r^2 θ D.(πr^2 θ)/(360°) E.(πr^2 θ)/(180°)
- O is the centre of the circle , and PT is a tangent . The area of shaded region is
A. 18-36π/2 B. 18-9π/2 C.9π/2 D.18 E. 16
18.If cos x = 24/25, and x is acute, then the value of tan x=……….
A.25/24 B. 25/7 C.24/7 D.7/24 E.7/25
- The value of 2 + 4 sin 30° = ……….
A.1 B. 2 C. 3 D. 4 E. 6
.1 only B. 2only C. 1and3 only D. 2and3 only E. 1,2 and 3 - A={x\x is an integer,1<x<12} and
B={x\x is a positive integer and less than 15 and x is multiple of3}then A∩B is
A.{3,6,9,12} B{2,3,4,5,6,7,8,9,10,11} C.{6,9,12} D.{3,6,9,12,15} E.{3,6,9}
14.If A≠B, which of the following is true?
A. A∩B=B∩A B.A∪B=B∪A C.A∪A=A D.B∩B=B
E.A\B=B\A
15.If S={1,2,3,4,5,6,7} is the universal set ,P={1,2,3,4} and Q´={1,2,7}, then P∩Q=…..
A. {1,2,3} B.{3,4} C.{3} D.{4} E.∅
16.If P∪Q={x,y,z,u,v},P∩Q={z,u} ,P\Q={x,v} then Q\P=…….