Answers

2016-03-13T14:58:48+05:30
First find the area of minor segment wid the help of formula then find the area of CIRCLE -area of Minor Segment.the degree 120 will become 60degree
0
sin(theta)/2*cos( theta)/2=sin(theta)
sin(theta)/2 = sin60degree
its an identity of half angles
2016-03-14T16:49:18+05:30
Use pi*r^°/360 for getting the area of sector then subtract the area of triangle from that sector's area
1 5 1