Question
In the figure, E is the centre of a semicircle and EABC is a rhombus. Given that ∠ECD = 30°, find
  1. ∠j
  2. ∠k
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

In the figure, E is the centre of a semicircle and EABC is a rhombus. Given that ∠ECD = 30°, find
  1. ∠j
  2. ∠k