Question

In the given figure, AD = 13, BC = 12 cm, AB = 3 cm and angle ACD = angle ABC = 90^0, Find the length of DC. Figure is given in attachment. Please answer quickly

Answer 1

Answer:

4cm

Step-by-step explanation:

AB = 3 cm, BC = 12 cm

According to Pythagoras Theorem,

(AC)2 = (AB)2 + (BC)2

(AC)2 = (3)2 + (12)2

AC=√153cm

(ii) In right angled triangle ACD

AD = 13 cm, AC = √153

According to Pythagoras Theorem,

DC2 = AB2 - AC2

DC2 = 169 - 153

DC = √16 = 4 cm

∴ Length of DC is 4 cm

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Answer 2

Answer:

Hope it helps you.......