Question

If o is the centre of the circle find the value of x in each of the following diagram

Answer 1

Answer:

the angle of a chord from centre is equal

therefore,

let the angle from chord to centre ibe y

130° + y + y = 180°

2y = 180° - 130°

y = 25°

when a radius and a chord meets at a point the angle is 90°

x + 25° = 90°

therefore, x = 65°