Question

In the adjoining figure line m || line n line l is a transversal. If m < b = (x + 15)° and m < e = (2x + 15)°, find the value of x. (note that < = angle )​

Answer 1

Answer:

Area of triangle=

2

1

×base×height=

2

1

×AB×AC

=

2

1

×5×12=30cm

2

Now, in ΔABC,

Area of triangle ABC=

2

1

×BC×AD

⇒30=

2

1

×13×AD

⇒ AD=

13

30×2

=

13

60

cm.