v.An arc BC subtends an angle of 144° at the centre O if a circle of radius 10 cm . Then the
length of arc BC is
A.25/2π B.25/2 π C.8/π D.π/8 E. 8π
13.If sin〖20°=x 〗then cos〖70°〗is
A.x B.x^2-1 C. 1-x D.1 +x E. √(1-x^2 )
14.If sin θ= 1/3 and θ is acute, then cos θ=……….
A.√3/2 B.1/2 C.√2/3 D.√8/3 E.2/√3
- In the given figure ⨀ O , OP = 3 cm and AB = √27cm. Then the length of the arc AB is
A. 3π cm B. 2π cm C. πcm D. 2π/3 cm E.π/3 cm
The gravitational force is a ……… range force .
(14) Weight has both magnitude and ………. .
(15) The SI unit of weight is ……… .
(16) Mass is a scalar quantity and its SI unit is ……… .
(17) The gravitational force interact between ………. .
(18) The weight of 50 kg mass is
