Question

(3)
sin A
(a) Prove that = cosec A+ cot A.
1-COS A
(b) In the given figure, DE II BC. (1) Prove that AADE is similar to AABC.
А
(it) Given that AD = BD, calculate DE if BC = 4.5 cm.
(i) If area of AABC = 18 cm, find area of trapezium DBCE.
D
E
B
C​

Answer 1

Answer:

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