1.

In the figure given below, AD=4cm,BD=3cm and CB=12 cm, then cotƟ equals(a) 3/4(b) 5/12(c) 4/3(d) 12/5

Answer»

Correct answer is: (d) 12/5

AB2=AD2+BD2

AB=5cm

AC2=AB2+CB2

AC=13 cm

Cot =CB/AB=12/5



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