A, B, C and D are points on the circumference of the circle in the diagram below. ECF is a
tangent at C, B1 = B2 .

10.1 If B1 = 𝑥, find, with reasons, TWO other angles equal to 𝑥. (4)
10.2 Hence, show that DC bisects AĈF. (2)
[6]
A, B, C and D are points on the circumference of the circle in the diagram below. ECF is a
tangent at C, B1 = B2 .
10.1 If B1 = 𝑥, find, with reasons, TWO other angles equal to 𝑥. (4)
10.2 Hence, show that DC bisects AĈF. (2)
[6]